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Pengzhan Steel Pipes

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Technical parameters

Allowable deviation of nominal outer diameter of steel pipe (SY/T5037-2000)

Nominal outside diameter (D)	Allowable deviation
Nominal outside diameter (D)	Tube body	Pipe end
< 508	±0.75%D	± 0.75%D or ± 2.5, whichever is smaller
≥ 508	±1.0%D	± 0.5%D or ± 4.5, whichever is smaller
Note: the pipe end is 100mm from the end face of the steel pipe.

Allowable deviation of nominal wall thickness of steel pipe (SY/T5037-2000)

Nominal outside diameter (D)	Allowable deviation
< 508	±12.5%T
≥ 508	±10.0%T

Weld excess height

Nominal outside diameter (D)	Allowable excess height h
≤ 12.5	≤ 3.2
> 12.5	≤ 4.8

Product Standards

Standard No.	Standard Name	Product type
API Spec 5L	Specification for pipeline steel pipe	Spiral welded pipe, straight seam submerged arc pipe, straight seam high frequency welded pipe
GB/T 9711.1－1997	Technical delivery conditions for steel pipes for oil and natural gas industry	Spiral steel pipe, straight seam submerged arc welded pipe, straight seam high frequency welded pipe
SY/T 5037－2000	Spiral submerged arc welded steel pipe for low pressure liquid transmission pipeline	spiral welded pipe
GB/T 14980－94	Large-diameter welded steel pipe for low-pressure fluid transportation	straight seam high frequency welded pipe
GB/T 3092－93	Welded steel pipe for low pressure fluid transportation	straight seam high frequency welded pipe
GB/T 13793－92	Straight seam electric welding steel pipe	straight seam high frequency welded pipe
GB/T 5384－91	Straight seam resistance welded steel pipe for ordinary fluid transportation pipeline	straight seam high frequency welded pipe
Note: production can also be organized according to the technical requirements of users

We are a production of oil, gas and civil spiral seam double-sided submerged arc welding steel pipe professional company. Products are widely used in oil, natural gas transmission, urban heating pipe network, water supply pipeline and sewage discharge, chemical industry, steel structure and other industries.