Hot Rolled Carbon Steel Pipe
Hot-rolled carbon steel pipes are divided into: general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
Cold Rolled Carbon Steel Pipe
In addition to general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, and other steel pipes, cold-rolled (dial) carbon steel pipes also include carbon thin-walled steel pipes, alloy thin-walled steel pipes, Rust thin-walled steel pipes, special-shaped steel pipes. The outer diameter of hot-rolled seamless pipe is generally greater than 32mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-rolled seamless steel pipe can reach 6mm, and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipe can reach 5mm, and the wall thickness is less than 0.25mm. Cold rolling has higher dimensional accuracy than hot rolling.
Carbon Steel Seamless Pipe
A seamless pipe is a long strip of steel with a hollow section and no seams around it. According to different production methods, it can be divided into hot-rolled tubes, cold-rolled tubes, cold-drawn tubes, extruded tubes, etc. Generally used in fluid conveying pipes, boiler plants, engineering, mechanical processing plants.
Classification and material of seamless steel pipe
| Product Name | Material | Executive Standard | Spot Specifications | Application |
| Alloy tube | 12Cr1MoVG 12CrMoG 15CrMoG 12Cr2MoCr5MoCr9Mo10Cr 9Mo1VNb15NiCuMoNb5 |
12Cr1MoVG 12CrMoG 15CrMoG 12Cr2MoCr5MoCr9Mo10Cr9Mo 1VNb15NiCuMoNb5 |
∮8-1240*1-200 | It is suitable for seamless steel pipes for high temperature resistance, low temperature resistance and corrosion resistance in petroleum, chemical industry, electric power and boiler industries. |
| stainless steel pipe | 0Cr18Ni9<304> 00Cr19Ni10<304L> 00Cr25Ni20<310S> 0Cr17Ni12Mo2<316> 00Cr17Ni14Mo2<316L> 1Cr18Ni9Ti<321> 0Cr18Ni10Ti 0Cr18Ni11Nb<347> |
GB/T14975-2002 GB/T14976-2002 GB13296-2007 ASTM A213 ASTM A269 ASTM A312 JIS G3459 DIN 17458 |
∮6-630*0.5-60 | It is suitable for petroleum, aviation, smelting, food, water conservancy, electric power, chemical industry, chemical, chemical fiber, medical machinery and other industries. |
| Cryogenic tube | 16MnDG,10MnDG,09DG 09Mn2VDG,06Ni3MoDG ASTM A333Grade1 ASTM A333Grade3 ASTM A333Grade4 ASTM A333Grade6 ASTM A333Grade7 ASTM A333Grade8 ASTM A333Grade9 ASTM A333Grade10 ASTM A333Grade11 |
GB/T18984-2003 ASTM A333 |
∮8-1240*1-200 | Suitable for -45℃～-195℃ low-temperature pressure vessel pipes and seamless steel pipes for low-temperature heat exchanger pipes. |
| High pressure boiler tube | 20G ASTM SA106B/C ASTM SA210A/C ST45.8-III |
GB5310-1995 ASTM SA106 ASTM SA210 DIN17175-79 |
∮8-1240*1-200 | Suitable for manufacturing high-pressure boiler heating pipes, headers, steam pipes, etc. |
| High pressure fertilizer pipe | 10 20 16Mn |
GB6479-2000 | ∮8-1240*1-200 | Suitable for chemical equipment and pipelines with a working temperature of -40--400°C and a working pressure of 10-32Mpa |
| Petroleum cracking tube | 10 20 |
GB9948-2006 | ∮8-630*1-60 | Furnace tubes, heat exchanger tubes and pipes for petroleum refineries. |
| Low and medium pressure boiler tube | 10# 20# 16Mn |
GB3087-2008 | ∮8-1240*1-200 | Suitable for manufacturing low-pressure and medium-pressure boilers and locomotive boilers of various structures. |
| Fluid delivery tube | 10#,20# ASTM A106A,B,C,A53A,B 16Mn |
GB/T8163-2008 ASTM A106 ASTM A53 |
∮8-1240*1-200 | General seamless steel pipes suitable for conveying fluids. |
| General structural pipe | 10#,20#,45#,27SiMn ASTM A53A,B 16Mn |
GB/T8162-2008 GB/T17396-1998 ASTM A53 |
∮8-1240*1-200 | Suitable for general structures, engineering supports, machining, etc. |
| Oil Casing | J55,K55,N80,L80 C90,C95,P110 |
API SPEC 5CT ISO11960 |
∮60.23-508.00 *4.24-16.13 |
Tubing is used to extract oil or natural gas in oil wells, and casing is used as the well wall of oil and gas wells. |
| Line pipe | A,B,X42,X46,X52,X56,X60,X65,X70,X80 L245,L290,L360,L415,L450 |
API SPEC 5L GB/T9711.1 GB/T9711.2 |
∮32-1240*3-100 | Oxygen, water and oil delivery pipes used in oil and gas industry. |
| straight seam steel pipe | 20,Q195,Q215A,B Q235A,B,Q345A,B,C,D,E |
GB/T13793-1992 GB3091-2001 |
∮32-630*1-30 | Suitable for general structural support, low-pressure fluid delivery, etc. |
| Spiral steel pipe | Q235A-B,Q345A-E | SY/T5037-2000 | 219-2820*4-20 | Suitable for steel pipes for low-pressure fluid transmission. |
