Grade(s)

Technical requirements

Seamless heavy wall steel pipe
High/ Low Temp steel pipes

SA 106B, SA 106C
SA 333Ⅰ, SA 333Ⅵ
P11, P12, P5, P91, P92

ASME SA106, ASME SA179
ASME SA333, ASME SA335
DN17175 ,EN10216-2

Seamless steel pipes of ships

320, 360, 410, 460, 490

GB/T 5312 or closer

ERW/ SAW
Spiral seam

API 5L GR.B, PLS2 .X-Grade

ASME SA226. ASME SA334
ASME B36.10M or closer