QingDao DukYang Trade Co., Ltd mainly produces any kind of washers and dirlling euipments products.
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.
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 customers can use them safty.
The materials are a2, A4, a3 and so on. The delivery is on time, quality is strict, the price is competitive. The price is FOB China main port and CIF main port. The documents are form a, c/o and b/l.
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