ASTM A519钢管

机械管中使用的ASTM A519碳和合金钢机械管可能会铸造在铸锭中,也可以铸造。

Size range(mm):

  • Out diameter:10-324mm
  • Wall Tickness:1-30mm
  • 长度:最大14000mm
ASTM A519钢管

The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties.

管道应提供以下世鹏科技电子es: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.


this specification covers several frades of carbon and alloy steel seamless mechanical tubing.

1.1 The frades anr listed in Tables 1, 2, and 3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the frade, the condition of the components, and the intended service.

1.2 This specification covers both seamless hot-finished emchanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3/4 in.(322.8mm) outside diameter of rround tubes with wall thicknesses as required.

1.3 The tubes shall be furnished in the following shapes, as specified by the purchaser:round, square, rectagular, and special sections.

1.4 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.

Reference documents

Features Specifications

OD(mm) Wall Thickness Unit(mm)
2 2.5 3 3.5 4 4.5 5 6 6.5-7 7.5-8 8.5-9 9.5-10 11 12


ASTM A519的化学组成(%)

Grade C Mn P≤ S≤ Si Cr Mo
1008 ≤0.10 0.30-0.50 0.040 0.050 - - -
1010 0.08-0.13 0.30-0.60 0.040 0.050 - - -
1018 0.15-0.20 0.60-0.90 0.040 0.050 - - -
1020 0.18-0.23 0.30-0.60 0.040 0.050 - - -
1025 0.22-0.28 0.30-0.60 0.040 0.050 - - -
1026 0.22-0.28 0.60-0.90 0.040 0.050 - - -
4130 0.28-0.33 0.40-0.60 0.040 0.050 0.15-0.35 0.80-1.10 0.15-0.25
4140 0.38-0.43 0.75-1.00 0.040 0.050 0.15-0.35 0.80-1.10 0.15-0.25

ASTM A519的机械性能

Grade 健康)状况 MPa Tenslle Point Yield Point 伸长
1020 CW


SR ≥345 ≥448 ≥10%
A ≥193 ≥331 ≥30%
N ≥234 ≥379 ≥22%
1025 CW ≥448 ≥517 ≥5%
SR ≥379 ≥483 ≥8%
A ≥207 ≥365 ≥25%
N ≥248 ≥379 ≥22%
4130 SR ≥586 ≥724 ≥10%
A ≥379 ≥517 ≥30%
N ≥414 ≥621 ≥20%
4140 SR ≥689 ≥855 ≥10%
A ≥414 ≥552 ≥25%
N ≥621 ≥855 ≥20%

ASTM A519的机械性能

Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe Standard Number Grade Tupe
G3445 STKM11A C A512 MT1010 C 1717 ERWC1 C 2391 St30Si C 3304 R28 C C017
A513 MT1010 C ST30A1 C 3305 " C
2393 St28 C 3306 " C
RSt28 C
2394 St28 C
USt28 C
RSt28 C
stkm12a C A512 MT1015 C 1717 ERWC2 C 2391 ST37-2 3304 R33 C
A513 MT1015 C 6323 HFS3 C RSt37-2 3305 " "
STKM12B C A512 MT1015 C 2394 ST37-2 3306 " "
A513 MT1015 C Ust38-2
A519 MT1015 C RSt-2
stkm12c C 1717 CEWC2 C A49-322 TU37b C
" CFSC3 C A49-327 TU37b C
6323 CFS3 C
STKM13A C A312 MT1020 C 1717 ERWC3 C 2391 ST45 C A49-324 TU37b C 2937 TS4 C
A513 MT1020 C 2393 St44-2 C A49-330 TU37b C 3304 R37 "
2394 St44-2 C A49-343 TU38b C 3305 " "
STKM13B C A513 MT1020 C 3306 " "
STKM13C C 1717 CEWC3 C
6323 CFS4 C
STKM14A C A513 MT1020 C 6323 HFS4 C 2937 TS9 C
3304 R42 "
STKM14B C 6323 HFS5 C 3305 R42 C
STMK14C C 3306 " "
STKM15A C A513 1030 C
A519 1030 C
STKM16A C A519 1040 C A49-311 TUXC35 C
A49-312 TUXC35 C
STKM17A C A519 1050 C 6323 HFS8 C
STKM17C C 6323 CFS8 C
STKM18A C A519 1518 C 1717 ERWC5 C A49-310 TU52b C
A49-311 TU52b C
A49-312 TU52b C
STKM18B C A49-321 TU52b C
A49-323 TU52b C
A49-326 TU52b C
STKM18C C A49-330 TU52b C
A49-341 TS42a C
" TS47a C
A49-343 TS18M5 C
STKM19A C A519 1524 C 2391 ST52 C 2937 TS18 C
2393 ST52-3 C 2938 Gr.1 C
2394 ST52-3 C 3304 R50 C
3305 R50 C
3306 R50 C
stkm20a C
G3441 SCr420TK Cr C018
SCM418TK CrMo 6323 CFS10 CrMo
SCM420TK CrMo A519 5120 CrMo
SCM430TK CrMo A519 4130 CrMo
SCM435TK CrMo A519 4135 CrMo
SCM440TK CrMo A519 4140 CrMo 6323 CFS10 CrMo


Cold drawn seamless steel tube deformed process

Cold Drawn Seamless Mechanical Tubing (CDS) is a cold drawn 1018/1026 steel tube which offers uniform tolerances, enhanced machinability and increased strength and tolerances compared to hot-rolled products.

Cold drawn seamless steel tube deformed process



Hot rolled seamless steel pipe deformed process


Hot rolled seamless steel pipe deformed process


After stretching machine rolled steel pipe shortage collectively need further molding mill in order to achieve the requirements of the finished pipe. Rolled steel due to pass in the method widely used in the production of seamless steel tubes.


All the traditional hole-type rolling machine with mandrel belong to extend machine. The main purpose is to reduce the deformation process perforated capillary wall thickness and outer diameter roll passes in the deformation zone and the mandrel posed, for a larger axial extension. At the same time a certain improvement in the organization, performance, accuracy, surface quality.


Before cutting pipe and tubing


After cutting pipe and tubing

  • 除非切割完全干净,否则您应该期望从边缘周围取下毛刺,尤其是在锯切后。
  • 使用去毛刺工具清洁管后的边缘cutting.
  • You may opt to use a metal file on the cut of a metal pipe.
Cut to length


Alloy steel pipes are ideally suitable for chemical, petrochemicals, and other energy-related applications.

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.

Alloy steel can be used in process area where carbon steel has limitation such as

  • 高温服务,例如加热管
  • 低温服务,例如低温应用
  • Very high presser service such as steam header

As an important element of steel products, alloy steel pipe can be divided into seamless steel pipe and welded steel pipe according to the manufacturing technique and tube billet shape.

Here you can see the common alloy steel grade that you will come across.

  • 用于管道:ASTM A335 GR P1,P5,P11,P9
  • For Wrought Fittings: ASTM A234 Gr.WP5, WP9, WP11
  • For Forged Fittings: ASTM A182 F5, F9, F11 etc.

Why the application of alloy steel pipe is wider than others



What requirements should alloy steel pipe application meet

The transportation of kinds of gases or liquids in production needs to rely on alloy steel pipe. This shows that the actual role of alloy steel pipe application is important. High temperature resistant and low temperature resistant is the tolerance of temperature. In the practical application of alloy steel pipe, there will be many materials need to be transported. However their temperatures are not the same. So this can be the basic requirement to alloy steel pipe. It needs more corrosion resistance. Corrosion resistant material is the best material during transporting, because it is corrosion resistant. So it can be used in more occasions. And it is definitely very convenient for users.

The biggest advantages of alloy steel pipe

Can be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy steel pipe total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy steel pipe to provide a wider space for the development of the industry. The future needs of the average annual growth of China’s high-pressure alloy steel pipe long products up to 10-12%.

Specification, standard and identification of alloy steel pipes

Alloy Steel pipe contains substantial quantities of elements other than carbon such as nickel, chromium, silicon, manganese, tungsten, molybdenum, vanadium and limited amounts of other commonly accepted elements such as manganese, sulfur, silicon, and phosphorous.

Industries We Serve

Our team of experienced sales specialists proudly partners with gas and chemical processors, power generation plants, oil refineries, and related industries to offer piping components and value-added services.

The biggest advantages of alloy steel pipecan be 100% recycled, environmentally friendly, energy-saving, resource conservation, national strategy, national policy to encourage the expansion of the field of application of high-pressure alloy pipe. Of alloy tube total consumption accounted steel in the proportion is only half of the developed countries, to expand the field of use of the alloy tube to provide a wider space for the development of the industry. According to the Chinese Special Steel Association alloy pipe Branch Expert Group, the future needs of the average annual growth of China’s high-pressure alloy pipe long products up to 10-12%.


Chemical composition inspection, mechanical properties test(tensile strength,yield strength, elongation, flaring, flattening, bending, hardness, impact test), surface and dimension test,no-destructive test, hydrostatic test.


identification of the chemical composition of the metal used to manufacture the fitting. Uses PMI sensors, including X-ray fluorescence or optical emission spectrometry.


Size measurement

Size measurement
Size measurement
Size measurement
Size measurement
Size measurement

Seamless pipes with compound bevels as per ASME B16-25 And ASTM A333

ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe
ASTM A333 Grade 8 Seamless Pipe


Steel pipe delivery status(condition)

Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW), after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).

健康)状况on delivery of steel pipe

Term Symbol Explanation
Cold-finished/hard (cold-finished as-drawn) BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft (lightly cold-worked) BKW After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed GBK 在最终的冷形成过程之后,将管子在受控的气氛中或真空下退火。
Normalized NBK 管子在受控大气或真空下方的上部转换点上方退火。

The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.

冷滚动的钢卷基板产品对高增值产品的深处理。例如电 - 甲变化的热浸镀锌,电 - 聚合物的指纹抗性,涂漆的钢卷曲阻尼复合钢,PVC层压钢板等广泛使用。

Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.


Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

Steel strips bunding for fixed pipes

Our packing can meet any needs of the customers.


Placing steel pipes into containers




合金元素 对属性的影响
Increases Resistance to corrosion and oxidation. Increases hardenability and wear resistance. Increases high temperature strength.
Nickel Increases hardenability. Improves toughness. Increases impact strength at low temperatures.
Molybdenum Increases hardenability, high temperature hardness, and wear resistance. Enhances the effects of other alloying elements. Eliminate temper brittleness in steels. Increases high temperature strength.
Manganese Increases hardenability. Combines with sulfur to reduce its adverse effects.
Vanadium Increases hardenability, high temperature hardness, and wear resistance. Improves fatigue resistance.
Titanium 最强的硬质合金。添加到不锈钢to prevent precipitation of chromium carbide.
Silicon Removes oxygen in steel making. Improves toughness. Increases hardness ability
Increases hardenability. Produces fine grain size.
Aluminum Forms nitride in nitriding steels. Produces fine grain size in casting. Removes oxygen in steel melting.
Cobalt 增加热量和耐磨性。


Ceramic lined pipe

【H】Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

Cast basalt lined steel pipe

【H】Cast basalt lined steel pipe




Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

Rare earth alloy wear-resistant pipe

【H】Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

Tubes Erosion Shields

【H】Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

ASTM A213 T91 Seamless Alloy Tube

【H】ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.