型式：

SMLS for 1/2” to 24”

ERW  for 1/2” to 40”

EFW for 18” to 80”

标准:

ASME B36.10,ASME B36.19 

材料:

碳钢

ASTM A53 Gr.B, A106, A333 Gr.1, Gr.3,

Gr.6，API 5L A,B,X42,X46,X52,X56,X60,X65,X70

合金钢

ASTM A335 P1,P5,P9,P11,P12,P22,P91

可满足NACE MR0175/ISO15156要求

不锈钢

ASTM A312 TP304,304L,316,316L,310(S),

321,321H,347,347H, UNS S31254, R50400

双相和超级双相钢

ASTM A358 UNS S31803,S32550,S32750

特种合金钢

Inconel 600,625,Incoloy 800,825, 

Monel 400, UNS N04400

Hastelloy C276