Dajiang Industrial Park, Taishan, Guangdong, China Dajiang Industrial Park, Taishan, Guangdong, China Dajiang Industrial Park, Taishan, Guangdong, China
Oil Well Casing And Tubing Oil And Gas,4-1/2 Casing Tubular Media Fox   standardastmenjisgbastm a106 astm a210  astm a53      etcen 10216-2-2002en 10217-2-2005en 10216-1-2002etcjis g3454-2005jis g3467-1988jis g3456-2004 etcgb 6479-2000gb3087-1999gb 5310-1995etc  materialcarbon steel grade:astma179,a192,a178 gr.c,a210 a1,astm a210 c,din 17175 st35.8,astm ...