QingDao DukYang Trade Co., Ltd.

QingDao DukYang Trade Co., Ltd mainly produces any kind of washers and dirlling euipments products. Washers: As follows washers (din, uss, nfe, jis, ks, special kinds, etc) and stamping parts for constrcution, and marble. The surface are five kinds: Plain, zinc plated, hot dip galv, yellow zinc plated, black and so on. The standards about washers like this: Not only din125, din126, din127b, din128, din432, din433, din434, din435, din436, din440, din463, din471, din472, din526, din93, din933, din1441, din1478, din1479, din1480, din6916, din6797, din6798, din6904, din6905, din6907, din6908, din6916, din6917, din6918, din7349, din7989, din9021; Nfe25-513----nfe25-515; But also jis, ks, bs4320, etc. And according to the client's design to produce the special fasteners. Drilling equipments: Besides, we can manufactures the drilling parts, oil rigs, pistons, seats, valves, pistons assy, piston rubbers, etc. All these products are accepted by API certificated. The quality is high. The cust... [Details]