中国散装沥青进口 · Bulk Bitumen Cargo into China

散装沥青进口中国，难点不在运费，而在数量与温度怎么写进合同。船货规模由指定岸罐当日的可用空高决定，不是由年度需求决定。合同必须写明到港最低卸货温度、全程连续加温记录，以及以公吨计的重量基准、计量地点、基准温度，并指定用哪一个密度做体积温度修正：中国货物通常同时存在出口证书上的ASTM D70密度和中国验收证书按JTG E20-2011 T 0603测定的15摄氏度密度，两者都真实，却不是同一个数。沥青在150摄氏度时每吨约占1.051立方米，15摄氏度时约占0.971立方米。这个数量最终写进报关单，而不是止于发票。散装比桶装少一次加热循环，老化更少。

The freight rate is not what decides a bulk bitumen shipment into China. Two things do, and both are drafting problems rather than commercial ones. The first is that a parcel is sized by the free ullage in one named receiving tank on the nominated day — not by the annual requirement the enquiry usually carries — and that the discharge rate and the offtake behind the tank have to be stated as figures before there is anything to price. The second is quantity. Bitumen is invoiced by weight and gauged as a volume, one tonne occupies about 1.051 m³ at a 150 °C loading temperature against about 0.971 m³ at 15 °C, and on a China cargo the seller gauges hot at the load port while the buyer gauges after a voyage the parcel has spent cooling. Worse, the material is characterised twice — an ASTM D70 density for the export file and a 15 °C density by JTG E20-2011 method T 0603 for Chinese acceptance — and the two honest figures then compete to set the invoice. So the contract must name a weight basis in metric tonnes, a point of determination, a reference temperature and one governing density from the loaded batch, because on a Chinese import that number does not stop at the invoice: it is filed in kilograms on a customs declaration. Where a receiver can genuinely take it, bulk is also the better technical answer — one controlled heating cycle instead of two, in a market whose specifications measure thermal history in numbers.

谁真正有加热罐区 · Where heated bitumen tankage actually sits

Heated bitumen tankage is a capital asset with a continuous running cost. Insulation slows the loss but does not stop it, and a tank held in the working range burns fuel every day whether or not anything is moving. Assets like that exist where there is continuous throughput to justify them, which in practice means three kinds of operation on the Chinese coast:

• Refining and blending operations that already handle binder in volume for their own account, and for which an imported parcel is a feedstock or a swing supply rather than a novelty.
• Modified binder and emulsion producers with year-round offtake, where the base binder is drawn down steadily rather than seasonally.
• Dedicated bitumen distribution terminals whose entire business is receiving, holding and reissuing hot binder into road tankers.

The operation that usually cannot take a bulk parcel, and that most often asks for one, is the project asphalt mixing plant with a single working tank sized for a few days of production. Its tank is a buffer, not a receiving facility. It has no ullage for a parcel, no capacity table anyone has calibrated, and no way to absorb the cargo before it cools. That plant is a drum, bag or tank container customer, and saying so early is cheaper for everyone than discovering it at the berth. The drummed cargo page covers what that route actually costs into China.

第一件事：以罐定量，不是以需求定量 · One — the parcel is sized by a named tank, not by the requirement

A Chinese bulk enquiry almost always arrives with a tonnage in it, and that tonnage is almost always an annual or project requirement rather than a parcel size. Treating the two as the same number is the commonest way a bulk negotiation into China spends six weeks and arrives nowhere. A parcel is sized by one thing: the free ullage in the named receiving tank on the nominated day, after room is left for the thermal expansion of a cargo that will arrive hotter than whatever heel it joins.

So the first message back is not commercial at all. Name the tank; give its working capacity; give the expected heel on the nominated day; give the date the capacity table was last certified. Until those four exist, there is no parcel to price. Where the answer leaves ullage for less than a viable parcel, the correct outcome is a tank container or packed cargo rather than an undersized vessel parcel — and a seller who says that in the first exchange is worth more to the buyer than one who quotes a keen number against a tank that cannot hold it.

第二件事：卸货速率决定谁承担等待成本 · Two — the discharge rate decides who pays for waiting

A hot parcel discharges at the rate the receiving side can actually sustain, which is set by the shore pumps, the length and diameter of the line, and how much incoming heat the receiving tank can absorb without the transfer stalling. That rate belongs in the contract as a figure the shore side has confirmed, not as an assumption. It carries more weight on a hot cargo than the general case, because a slow discharge accrues laytime and heat loss simultaneously, on the same parcel, from the same delay. Two costs, one clock.

Settle three points alongside the rate: which side supplies and traces the connecting hose, what follows if the shore side cannot sustain the agreed rate, and how the resulting time is counted. None of these questions exists on packed cargo, because a container is discharged by the terminal at the terminal's rate and the drums inside are indifferent to how long it takes.

第三件事：罐后面的提货速度 · Three — the offtake behind the tank

The receiving tank is a staging point, not a destination, and a bulk parcel is viable only if the material keeps moving out of it. This is where a Chinese bulk enquiry most often fails on inspection, and the failure is usually a calendar problem rather than a physical one: the tank exists, the pumps exist, and the consumption that was supposed to draw the parcel down does not begin for another two months. Binder held hot ages while it waits and burns fuel while it ages, so a parcel matched to a tank but not to an offtake rate has been paid for twice before it is laid.

Ask for the offtake in tonnes per week against the parcel size, then read that answer against the paving calendar for the stretch of coast in question, which is set out region by region on the ports and terminals page. The arithmetic is blunt and it is worth doing before the freight comparison rather than after: a parcel that takes longer to consume than the season has left is the wrong parcel at any price.

对面是谁 · Who is on the other side of this negotiation

One premise, because it changes how a bulk offer into China should be written. China is largely self-sufficient in bitumen from its own refining base, and an imported parcel is not covering a national shortfall — it competes at the point of landing against domestic material the receiver could take instead, inside a domestic supply chain that already runs on bulk. The implication is specific to this cargo form. The operations physically able to receive a parcel are precisely the operations already moving domestic binder in volume every working day, and they read a bulk offer the way a practitioner reads one. An offer that arrives without a density from the loaded batch, without a stated minimum arrival temperature and without a named survey basis is not read as competitive. It is read as unfamiliar, and it is answered slowly or not at all.

装港温度不是到港温度 · A loading temperature is not an arrival temperature

A heated tank vessel normally loads at roughly 150–170 °C and holds temperature on passage through cargo coils. How much it actually holds depends on whether the coils are worked, how the tanks are insulated, how long the voyage is and what the ambient conditions are along it. A tank container without a working heating system does not hold temperature at all; it cools, and it has to be reheated on the quay before it will discharge, which adds days, adds cost and adds one more heating cycle to the binder.

So a contract that states only the loading temperature has described the easy end of the problem. Four things belong in writing instead:

• A minimum temperature at the manifold on commencement of discharge. Not a target, a floor, with the consequence of falling below it stated.
• A continuous heating log for the passage. A log with two readings, one at each end, records nothing about what happened in between and is worth exactly as much as its detail.
• Who bears the time and cost of raising temperature if the cargo presents below the floor. On a hot parcel this is not a hypothetical, and the silence in the contract is what makes it expensive.
• The temperature at which the discharge gauge is taken, because that reading feeds the quantity calculation covered further down this page.

货物偏冷时不要提高设定温度 · The wrong instinct when a parcel presents stiff

The working temperature range, the viscosity ceiling that makes a binder pumpable at all and the pump and tracing requirements behind it are general bulk properties, published limits and all, on the bulk bitumen page. What is worth adding for a Chinese cargo is what to do when a parcel presents colder than the floor, because the instinct is wrong. Storage should not exceed roughly 180–190 °C, and the fact that JTG F40-2004 requires a flash point of at least 260 °C for 70# by Cleveland open cup under JTG E20-2011 method T 0611 — against 232 °C in ASTM D946 — is a safety margin, not headroom to run hot in. Running hot oxidises the binder, and on a China cargo that arrives as a specification consequence rather than a housekeeping one, because the ageing block is a scored line on the acceptance certificate rather than an operating preference. The answer is controlled heat and time through covered coils, and the contract should already say who carries both.

一票热货全程都在100 °C 线以上 · A hot parcel is in the elevated-temperature condition for the whole journey

That bitumen carried at or above 100 °C is UN 3257, Class 9, elevated temperature liquid, while solid packed bitumen generally is not handled as a dangerous good, is set out with its consequences on the ports page; the Chinese safety data sheet format is on the SDS page. What is specific to bulk is duration and drift. A hot parcel sits in the elevated-temperature condition continuously, from the load manifold to the receiving tank, with no cold leg anywhere to fall back on. And because bulk is often the form a negotiation arrives at rather than the form it opened with, the practical failure here is administrative rather than technical: an enquiry quoted as drums, converted to hot bulk on the third exchange, then booked on paperwork drafted for the first version. When the cargo form changes, re-issue the booking, the transport document and the declaration together, and make the safety data sheet address carriage at or above 100 °C rather than a solid product in a drum.

少一次加热循环 · The heating cycle that does not happen, and why China measures it

This is the part of the bulk argument that is technical rather than commercial, and it lands harder in China than in most markets because the Chinese specification puts numbers on it.

Drummed binder has already been through a full thermal cycle before the buyer sees it: heated to fill the drum, then cooled to ambient. To use it, the buyer heats the whole mass again and melts it out. That second cycle is the harsh one — a burner played against a drum wall, applied unevenly, without instrumentation, by whoever is on shift. Bulk arrives hot and goes straight into the tank. One cycle instead of two, and the one is controlled.

Every heating cycle ages the binder: penetration falls, softening point rises, ductility drops. The Chinese requirement table concedes the point by measuring it directly. Under JTG F40-2004, mass change after the rolling thin film oven test or the thin film oven test — JTG E20-2011 methods T 0610 and T 0609 — is held within ±0.8 %, and the retained penetration ratio at 25 °C after ageing must reach at least 61 % for 70# A级, 57 % for 90# A级 and 54 % for 110# A级. GB/T 15180 is tighter still on volatile loss, holding thin film oven test mass change within ±0.6 % for AH-70. Residue ductility tightens on the same axis.

Read those limits as what they are: a national specification stating, in numbers, how much thermal history a paving binder is allowed to have accumulated and still be fit to lay. Acceptance is decided on the certified material, but it is the placed binder that has to survive the pavement, and part of the class margin under the A级/B级/C级 system sits precisely in the post-ageing residue block. A second uncontrolled heating cycle at the buyer's end spends margin the class depends on. The full requirement structure is on the JTG F40 page, and the 70# case in detail on the 70号沥青 page.

散装也集中了风险 · What bulk concentrates, and it is not only cost

The honest counterweight. Bulk removes the packing entirely — no steel bought at origin, none decanted, melted or disposed of at destination, and the loading arithmetic and the cost of the empties belong to the drummed cargo page rather than to this one. What is worth saying here is the other side of that trade, because it runs the opposite way: bulk concentrates the quality risk into a single body of material. One tank of off-specification binder is one problem across the whole parcel, where a drummed lot can be quarantined unit by unit.

For a Chinese cargo that matters more than it does elsewhere, because the line most likely to fail is wax content (蜡含量), tested by the distillation method T 0615, limited by Chinese specifications and not specified at all by ASTM D946 or EN 12591. A wax result above the class limit cannot be sorted, blended away at the quay or quarantined drum by drum on a bulk parcel. It has to be measured on the material being offered before the parcel loads. The wax content page covers the limits and the crude-source question behind them.

散装按提货节奏买，不按库存节奏买 · Bulk is bought against offtake, not against stock

Every other cargo form into China can be bought ahead of a season and held; the storage properties that make pre-seasonal positioning work in the north belong to packed cargo and are set out on that page. Bulk has no equivalent move available to it. Binder held in a tank at working temperature ages continuously and burns fuel while it ages, so parking a parcel through a closed northern season is paid for twice — once out of the specification margin the class depends on, and once out of the receiver's fuel budget.

What follows is a change of buying rhythm rather than a change of schedule, and it is the most useful thing to put to a northern Chinese buyer in the first exchange. Packed cargo is bought against stock; a bulk parcel is bought against offtake. So the question that decides whether a northern bulk enquiry is real is not when the season opens. It is what the receiving tank will be drawing down, in tonnes per week, on the day the parcel lands. Where the honest answer is nothing yet, the requirement is a packed one whatever the freight comparison says, and a first bulk parcel is better timed against the second season of a programme than the first — by which point there is a consumption record to size it against instead of a forecast.

散装不能等 · Bulk cannot wait

The second tool a packed cargo has is patience. A container of drums that waits three days at a terminal is unchanged when it moves. A hot parcel that waits is cooling, and cooling has three costs stacked on each other: the temperature has to be put back, putting it back is another thermal event on a binder whose ageing is specified, and the waiting itself is laytime on a vessel or detention on a unit. This is why the statement of facts — pumping start and stop times, and the reason for every stoppage — is a document that matters on a bulk parcel and does not exist on a containerised one.

The organisational requirement follows directly, and it is the one that most often fails: the receiving tank must be empty, hot, gauged and ready on the nominated day. Bulk does not wait politely for a tank that is still being drawn down. Nominate the receiving window realistically, and agree in the contract who carries the cost when it slips.

日程风险在散装上会转成温度风险 · On a hot parcel every schedule risk converts into a temperature risk

The seasonal facts are the same facts for any cargo and are set out region by region on the ports page. The bulk-specific point is not the calendar, it is the conversion. For packed cargo a schedule slip is a delivery-date problem and nothing else; the drums are unchanged when they finally move. For a hot parcel each day of slip is also a day of heat loss on the cargo and a day of fuel on a shore tank that has been standing ready and hot against a nominated window, so cost accrues at both ends before a tonne has crossed the manifold. That is why a bulk schedule should be read as a technical document rather than a commercial one, and why the arrival window belongs in the same clause as the arrival temperature rather than in a separate one.

Two planning rules follow, and they are the only two this page asks anyone to carry away about the calendar. Build the laycan inside the paving season with the margin at the front rather than the back — a parcel timed to arrive at the tail of a season has nowhere to go if it slips, because the paving has stopped, the offtake behind the tank has stopped with it, and the cargo becomes the one thing bulk cannot be, which is inventory held hot. And treat a suspended berth as a temperature exposure rather than only a laytime one, which argues for carrying slack in a schedule rather than for avoiding the cargo form. Continuous year-round offtake is precisely the condition a bulk parcel wants, and where it exists the parcel should be timed against consumption that is already running, not against a season about to open.

Bitumen is bought and invoiced by weight. In a tank it is measured as a volume. The two only agree at one temperature, and on a China cargo the seller is gauging at loading temperature while the buyer is gauging at whatever the parcel has cooled to across the voyage. Both figures can be honest and both can be correct, and they will not be the same number.

算一遍 · The arithmetic, in the form the contract needs it

The derivation is general and is worked through on the tonnage and volume conversions page; the figures are repeated here because a bulk contract into China has to be drafted against them. Bitumen expands on heating with a volumetric expansion coefficient of approximately 0.00061 per °C. A paving binder at 1.03 t/m³ at 15 °C, measured by ASTM D70, has an expansion factor of about 1.082 at a 150 °C loading temperature, which puts the density at roughly 0.952 t/m³.

In contract form: one tonne occupies about 0.971 m³ at 15 °C and about 1.051 m³ at 150 °C — the same mass in 8.2 % more space.

On a drummed shipment that is a footnote, because the drums are counted. On a parcel it is the entire quantity argument. Three thousand tonnes occupies about 2,913 m³ at 15 °C and about 3,153 m³ at 150 °C, so roughly 240 m³ of apparent volume is temperature rather than product; a cargo loaded at 165 °C and gauged at 135 °C on arrival shows about 1.7 % less volume with not one kilogram missing. Anyone reading that shortfall as a loss is reading a thermometer as a scale — and on a China cargo it is read that way regularly, because the seller's gauge is taken hot at the load port and the buyer's is taken after a voyage the cargo has spent cooling.

用哪一个密度 · Which density feeds the correction

The correction is only ever as good as the density fed into it, and a China cargo characteristically has two candidate densities in circulation. There is the ASTM D70 figure on an export certificate of analysis, and there is the density at 15 °C on a Chinese acceptance certificate, which JTG F40-2004 requires to be measured and reported (实测记录) by JTG E20-2011 method T 0603. They are measuring the same physical property, they are produced by different laboratories under different protocols, and they will not necessarily agree to the third decimal place.

Put a number on what the third decimal place is worth. Correct that same 3,153 m³ observed at 150 °C back to the 15 °C base and it is about 2,914 m³. Apply a density of 1.030 t/m³ and the cargo weighs about 3,001 tonnes; apply 1.025 t/m³ and it weighs about 2,987 tonnes. Five thousandths of a tonne per cubic metre — a gap two competent laboratories can produce honestly on the same material — is roughly 14.6 tonnes on a single parcel, and nobody has done anything wrong. This is the failure mode that is specific to a China cargo rather than to bulk in general: the material is characterised twice, once for the export file and once for Chinese acceptance, and the two figures then compete to be the one that sets the invoice.

Name in the contract which density governs the quantity correction, and require it to come from the batch actually loaded rather than from a typical value on a data sheet. It is a one-line clause and it removes an entire category of argument before the cargo sails.

单位与基准温度 · Units and the reference temperature

State metric tonnes explicitly, and state the reference temperature explicitly rather than leaving it implied. Which ton is which, and what the gaps between the conventions are worth, is arithmetic common to any cargo and is set out on the tonnage and volume conversions page. The part specific to this route is that both ends of a China transaction look as though they already agree, and do not. Chinese practice works in degrees Celsius and the Chinese acceptance certificate reports density at 15 °C by T 0603, so 15 °C is the natural base for a cargo into China; a seller working from an export file built on United States practice is basing on 60 °F, which is 15.56 °C. Neither side raises it, because each assumes the other means the obvious thing. Write the base into the contract in figures.

为什么在中国这件事不只是商务问题 · Why this is not purely a commercial question in China

On a Chinese import the quantity figure does not stop at the invoice. It travels onto the bill of lading, into the letter of credit and onto the customs declaration (报关单), where the net weight is declared in kilograms, and import VAT on goods is 13 %, assessed on the customs value. That means a quantity restatement after arrival is not a private commercial adjustment between two parties — it touches a filed declaration. The unit and the basis have to read identically, word for word, across the sales contract, the credit, the survey certificate, the commercial invoice, the bill of lading and the declaration.

How that consistency requirement works across the whole file, and what each mismatch triggers, is covered on the import documents page; the classification side, including why the duty rate must be read from the current tariff schedule for the specific subheading and origin rather than taken from any general figure, is on the HS code page. Petroleum bitumen is HS 2713.20 (石油沥青), and the entry-exit inspection and quarantine function has sat inside the General Administration of Customs (中国海关总署, GACC) since the 2018 reform, so there is one declaration and no separate CIQ filing to arrange.