seamless steel pipe, thick wall seamless steel pipe, large diameter seamless steel pipe

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Large diameter thick wall seamless steel pipe details

Date:2024-03-28
Large diameter thick wall seamless steel pipes are mainly reflected in:

1. Large diameter: It is generally believed that seamless steel pipes with diameters above 219 are large-diameter seamless steel pipes, those with diameters less than 76 are small-diameter seamless steel pipes, and those in the middle are considered conventional seamless steel pipes.

2. Thick-walled seamless steel pipe: It is generally believed that the wall thickness/pipe diameter equal to 0.02 is the dividing line between thick-walled steel pipes and thin-walled steel pipes. The wall thickness/pipe diameter less than 0.02 is a thin-walled steel pipe, and the wall thickness/pipe diameter greater than 0.02 is a thick-walled steel pipe.

Large-diameter thick-walled seamless steel pipes are widely used. Their applications are summarized below: water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural purposes: piling pipes, bridges; pipes for docks, roads, building structures, etc.

Seamless steel pipe implementation standards
1. Seamless steel pipes for general structural use: GB8162-2008
2. Ground seam steel pipe for conveying fluid: GB8163-2008
3. Seamless steel pipes for boilers: GB3087-2008
4. High-pressure seamless pipes for boilers: GB5310-2008 (ST45.8-Ⅲ type)
5. High-pressure seamless steel pipes for fertilizer equipment: GB6479-1999
6. Seamless steel pipe for geological drilling: YB235-70
7. Seamless steel pipe for oil drilling: YB528-65
8. Seamless steel pipe for petroleum cracking: GB9948-88
9. Special seamless pipe for oil drill collars: YB691-70
10. Seamless steel pipe for automobile half shaft: GB3088-1999
11. Seamless steel pipe for ships: GB5312-1999
12. Cold drawn and cold rolled precision seamless steel pipe: GB3639-1999
13. Various alloy tubes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo

In addition, there are GB/T17396-1998 (hot-rolled seamless steel pipe for hydraulic props), GB3093-1986 (high-pressure seamless steel pipe for diesel engines), GB/T3639-1983 (cold-drawn or cold-rolled precision seamless steel pipe), GB /T3094-1986 (cold drawn seamless steel pipe special-shaped steel pipe), GB/T8713-1988 (precision inner diameter seamless steel pipe for hydraulic and pneumatic cylinders), GB13296-1991 (stainless steel seamless steel pipe for boilers and heat exchangers), GB/T14975 -1994 (stainless steel seamless steel pipe for structural use), GB/T14976-1994 (stainless steel seamless steel pipe for fluid transportation) GB/T5035-1993 (seamless steel pipe for automobile half-shaft casing), API SPEC5CT-1999 (casing and oil pipe Specification) GB9711.1-1997 (natural gas transmission), etc.
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seamless steel pipe, thick wall seamless steel pipe, large diameter seamless steel pipe
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