... are avalible here 3Applicationuse for oil well, boilers, precision machines, petro-chemical, ship, structure pipe, automobile,shock absorber,building, geology ... ;8Packing Packing:Black painting,end beveled,ends protected with plastic caps.In bundle9Delivery Delivery: 30days after receiving the advanced payment ... TIANJIN port 14Certificats ISO9001 API5L API5CT TS16949 ISO14001 oil and gas pipe