our company (XINYUANTAI STEEL PIPE GROUP CO.,LTD) are one professional steel pipe manufacturer.we already passed ISO certificate, and API 5L and API 5CT cetificate.
  
our products are seamless steel pipe, ERW pipe, SSAW pipe. the specifications are following:
 
SPIRAL STEEL PIPE 
OUTSIDE.D 219--3220mm 
W.T 6--18mm
STANDARD SY/T5037-2000 GB9711.1 GB9711.2 API5L
MATERIAL: ST37,ST44,ST52, Q235B/Q345B/L245/L290/L360/L415/L485/20# API 5L.B/X42/X52/X60/X70 etc
 
ERW STEEL PIPE 
OUTSIDE.D 60.3--609.6mm 
W.T 6--14mm
STANDARD GB3091-2001 GB9711.1 GB9711.2 API5L API 5CT
MATERIAL ST37,ST44,ST52, Q235B/Q345B/L245/L290/L360/L415/L485/20# API 5L.B/X42/X52/X60/X70 etc

SEAMLESS STEEL PIPE

OUTSIDE.D 21.3--609.6mm 
W.T 6--50mm
STANDARD GB/T8162-1999 GB/T8163-1999 GB3087-1999 GB5310-1999 API5L API 5CT

MATERIAL ST37,ST44,ST52,Q345B/20#/45#/20G/16Mn/J55/K55/L80/API 5L.B X42/X52/X60/X70 etc

 

CASING STEEL PIPE
OUTSIDE . D 139.7-269.9mm
W.T. 6.2-15.11mm
MATERIAL: J55,K55,N80-1,N80Q,L80Q,P110, etc

 

PIPE fittings: Elbow, tee, reducer, cap, Flange, bend.


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