1 standard : ANSI,JIS,DIN,GB,BS,EN. 2. W.T:1~60MM. 3. Length: 6~12m. 4. Certificate:ISO90001:2000,API. MaterialCarbon steel ,alloy steel ,stainless steel SizeSeamless steel DN15~DN600 , OD:21.3~609.6MMButt-welding DN15~DN1200 ,OD:21.3~1219.2MMGalvanized or Erw steel OD:114~1440mm.W.T1-60mm /SCH10~SCH160, STD, XS ,XXS sch5s, sch20s, sch40s, sch80s,SGP.LengthSample 6~12m or as the clients' ...