公司名称：河北中海钢管股份有限公司

压槽管切槽管corrugated /Grooved Pipe
asme sa210 a1 carbon seamless tube
BS1387 ASTM A53 Hot Dipped Galvanized Steel Pipe;GB/T3901;EN39;BS4568
a252 Gr.1/Gr.2/Gr.3 seam steel pipes/tubes
Treaded Galvanized steel pipes with coupling
AWWC200 steel water pipe
3PE anticorrosive oil steel pipe/3 layer polyethylene coated
ERW ASTM A178 Fire pipe
corrugated /Grooved Pipe
LSAW. UOE/JCOE
bs 729 hot dipped galvanized coatings steel pipes and tubes
Q235, Q345, Q195 welded pipe,Longitudinal Electronic Resistance Welding(ERW)
High Frequency Welding(HFW)
ASTM A333/GR3;GR6;SA335-P11;P5;P9;P91;P22;P23;P36;P92;
ASTM A500/A513/SA519-
ASTM A671/SA672/A691-B60;B70;C65;D70;



ASTM A53-A&B;A106-A&B&C;A178;A179;A192;A209;SA210-A1&C;
ASTM A213-T1;T2;T11;T22;T5;T9;T23;T91;T92;T36;SA268-TP410;TP430;
ASTM A312-TP310;TP316;TP317;TP321;TP347; SA790-S31803;S32205;
ASTM A333/SA334-GR1;GR3;GR6;GR8;SA335-P11;P5;P9;P91;P22;P23;P36;P92;
ASTM A500/A513/SA519-B;C;1010;1045;4130;4140:5140;8620;8630;8640;
ASTM A671/SA672/A691-B60;B70;C65;D70;D80;K75;CM70;1Cr;11/4Cr;5Cr;9Cr;