1) Standard: GB, DIN, ASTM, API 
2) Grade: ASTM A106, . GR. B/ A53 GR. B, API 5L GRB, API 5CT GR. B, ST37, ST52 
3) Outside Diameter: 1/2"-72" DN15-DN1200 
4) Wall Thinkness: 0.5mm-80mm sch40--schXXS. 
Length: 5.8m-12m, or according to the clients' request 
5) Usage: Widely used in petroleum, natural gas, chemical power, fire and other industries, or as the clients' requirement 
6) End: Bevelled end or plain end 
7) Marking: Size, standard, and heat number, or marking as customers' required 
8) Painting: Painting black coating, or as per the clients' request 
9) Package: Packing in bundles, caps at both ends, or as per the clients' request 
10) Quanlity: High quanlity, best price 
Delibery time: 10--30 days 
Delivery Term FOB/CFR/CIF 
Third party inspection: BV, SGS, Lloyds