... Xinglong Seamless Tube Manufacturing Co.,LtdNameseamless carbon steel pipe 20 Brand nameXinglong (ourself)StandardAPI 5CT ,API 5L,ASTM ... 27~426mm Length: 5.8~13m(as your requirment) Material: 20#, 45#, 16Mn, Q195, Q235, Q345B, 30CrMo, 42CrMo ... Road, Development Zone, Liaocheng, ChinaTel: +86-635-8886513 Fax: +86-635-8886535Mobile: +86-15194009714Website: http://www.cnxinglong.cnseamless steel pipes ...