speciality produces GB 7246 - 87 of washer of spring of wave form , shape spring washer of saddle: GB 7245 - 87, spring washer of shape of duplicating each other: One 7244th GB, make up and spend playing the cushion: 9072.26 GB, products finish marking American to finish making Great Britain finish making Germany finish making and wait for standard produce specification dia. 2 according to country --dia. 30, material : 65 Ms, 70 steel, stainless steel, The phosphorus copper of the purlin. 4. 8,6 mechanical performance grade. 8,8.8,10.9,12.9 from machineries
Major Products include: High strength and high precision thread rolling dies, pointed tail and special thread rolling dies, heading dies, etc., with super hardness material such as carbon steel, alloy steel, titanium alloy and stainless steel.