Industry standard

Industry standard

                       
Update:25-07-2019
Summary:

Steel welded seamless pipe fittings GB / T 12459-2005 " […]

Steel welded seamless pipe fittings GB / T 12459-2005

"Steel welded pipe fittings" GB / T 13401-2005

"DL / T 695-1999" power plant steel pipe fittings

SH 3408 steel welded seamless pipe fittings

SH 3409 is made of welded steel pipe

SH 3410 Forged Steel Socket Welding Accessories

HGJ514-87 carbon steel, low alloy steel seamless pipe fittings

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