This is May  from Shandong Liaocheng ZGL Metal Manufacturing Co.,Ltd in China. We are the  largest international enterprise for Carbon and Alloy Seamless steel pipe  in Shandong province ,China . We have got two  production line as:-, Cold drawn/Precision production line from size 30mm-102mm OD pipe.-, Hot rolled production line from size 60mm-426mm OD pipe. And Hot expanded pipe from 457mm-610mm-,Wall thickness from 3mm -100mm -. Rectangular pipe: 30mm*30mm to 400*400mm with wall thickness 3-20mmWe can produce Seamless steel pipe with different specifications according to customer&＃39;s requirement. our main products include: Mechanical Machining pipe,Concreting pump pipe;Automobile Pipe; Oil and casing Pipe; Hydraulic Pillar used Pipe; Pressure Vessel Pipe; War industry Pipe and so on .Products in our factories can meet international standards, such as: ASTM, API,JIS, DIN, EN,  etc.main market include : Mid-east,Europe,Asia,South America;Africa ......etcWe have got carbon steel pipe for liquid use (ASTM A106/A53GR.B,SA179SA192), steel pipe for pipeline (API5L GR.B, X42, X52, X56,X60, X70), steel pipe for construction (high thickness of ST44, ST52,ST 37/GOST 8732-78). Alloy pipe (ASMESA335 P11,P12,P22.12CrMo,15CrMo,12Cr1MoV)  We sincerely invite you visit and inspect our factory in person when you have a chance