"中国美扬石油管件有限公司，加工生产API油管接箍、套管接箍，材质有J55，K55，N80，P110，L80等。。。规格型号2 3/8，2 7/8，3 1/2，4 1/2，5 1/2，7，9 5/8，10 3/4，13 3/8等。。。希望与朋友合作，谢谢！ Mei Yang Petroleum Pipe Fitting Corporation of Dong Ying City China is a professional manufacturer of tubing couplings and casing couplings. Products are widely sold in markets of big oil fields of China. Materials: J55 K55 N80 P110 L80Model Number: 2 3/8—13 3/8Telephone Number: Fax: 86-EMAIL:wangzm51@s..