Carbon steel pipes are made of high-quality carbon steel such as 10, 20, 30, 35, 45, 16Mn, 5MnV and other low-alloy structural steels, or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steels are hot-rolled or cold-rolled. 10, 20 and other low carbon steel seamless pipes are mainly used for fluid conveying pipelines. Seamless tubes made of medium carbon steel such as 45 and 40Cr are used to manufacture mechanical parts, such as stressed parts of automobiles and tractors. Generally, carbon steel pipes are used to ensure strength and flattening tests. Hot-rolled steel pipes are delivered in a hot-rolled or heat-treated state; cold-rolled steel pipes are delivered in a heat-treated state.

Carbon steel pipe
Section Shape	Round
Tolerance	±1%
Alloy Or Not	Non-Alloy
Thickness	1 – 60 mm
MOQ	5Ton
Length:	Client Requirement
Standard:	API, ASTM, GB, API 5L, API 5DP, ASTM A182-2001, ANSI A213M-2001,
Surface treatment	Black/Peeling/Polishing/Machined
Technique	cold rolled/drawn
Heat Treatment	Annealed; Quenched; Tempered
price terms	FOB,CRF,CIF,EXW all acceptable
Delivery Detail	inventory About 3-5； custom-made 10-15；rding to order’s quantity.
Loading port	any port in China
Packing	standard export packing (inside:water proof paper,outside:steel covered with strips and pallets)
Payment Terms	T/T, L/C at sight,West Union,D/P,D/A,Paypal
Container size	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)
	40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)
	40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)

product name	Spot material	Executive standard	Spot Specifications	Applications
Alloy tube	12Cr1MoVG12CrMoG15CrMoG12Cr2MoCr5MoCr 9Mo10Cr9Mo1VNb15NiCuMoNb512Cr2MoWVTiB	GB5310-1995GB6479-2000GB9948-2006DIN17175-79ASTM SA335ASTM SA213JISG3467-88JISG3458-88	∮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>0Cr17Ni12Mo 2<316>00Cr17Ni14Mo2<316L>1Cr18Ni9Ti<321>0Cr18Ni10Ti0Cr18Ni11Nb<347>	GB/T14975-2002GB/T14976-2002GB13296-2007ASTM A213ASTM A269ASTM A312JIS G3459DIN 17458	∮6-630*0.5-60	Suitable for petroleum, aviation, smelting, food, water conservancy, electric power, chemical industry, chemical, chemical fiber, medical machinery and other industries
Cryogenic tube	16MnDG、10MnDG、09DG09Mn2VDG、06Ni3MoDGASTM A333Grade1ASTM A333Grade3ASTM A333Grade4ASTM A333Grade6ASTM A333Grade7ASTM A333Grade8ASTM A333Grade9ASTM A333Grade10ASTM A333Grade11	GB/T18984-2003ASTM 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	20GASTM SA106B/CASTM SA210A/CST45.8-III	GB5310-1995ASTM SA106ASTM SA210DIN17175-79	∮8-1240*1-200	Suitable for manufacturing high-pressure boiler heating tubes, headers, steam pipes, etc.
High pressure fertilizer pipe	102016Mn	GB6479-2000	∮8-1240*1-200	High pressure fertilizer pipe
Petroleum cracking tube	1020	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,B16Mn	GB/T8163-2008ASTM A106ASTM A53	∮8-1240*1-200	General seamless steel pipes suitable for conveying fluids
General structural pipe	10#、20#、45#、27SiMnASTM A53A,B16Mn	GB/T8162-2008GB/T17396-1998ASTM A53	∮8-1240*1-200	Suitable for general structures, engineering supports, machining, etc.
Oil Casing	J55、K55、N80、L80C90、C95、P110	API SPEC 5CTISO11960	∮60.23-508.00*4.24-16.13	Tubing is used in oil wells to extract oil or natural gas Casing is used as the well wall of oil and gas wells
Line pipe	A、B、X42、X46、X52、X56、X60、X65、X70 、X80L245、L290、L360、L415、L450	API SPEC 5LGB/T9711.1GB/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,BQ235A,B、Q345A,B,C,D,E	GB/T13793-1992GB3091-2001	∮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