Welding Technology : 
1) ERW-Electric Resistance Welded Steel Pipes / Tubes ; 
2) LSAW-Longitudinal Submerged-arc Welded Steel Pipes / tubes

Out Diameter: ERW 21.3mm~168mm ; LSAW 219mm~1422.4mm
Wall Thickness:2.5mm~100mm
Length:2m~12m

Material:API 5L GR B,ASTM A106 GR A/B/C,ASTM A53 GR A/B, A210, A252, 
A333;API 5L PSL1 PSL2 X42, X46, X52, X60, X65, X70; 20#, 20G,Q345, Q235,
16Mn,L245~L555; JIS STPG42,G3454, G3456; St37, St42, St45, 
St52, DIN 1626, DIN 17175 etc.

Standard:GB/T 3092-200,ASTM /ASME B36.10M, API 5L, JIS, DIN 17175,DIN17100,DIN1626, BS1387,BS6323,BS10210,BS3602,EN10217,EN10219,AS1163,
AS1074,GOST 10704-91, GOST 10705-80, GOST 10706-76,GB/T etc.