There are different grade for hex bolts, such as 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, etc. Among them, the hexagonal bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. It reaches different grade after heat treatme
Conical spring are widely used in medical respiratory equipment, motion contral, Medial mobile equipment,hand tools, home care equipment,Roaming,machinery and electronics, protetive equipment,fluid control walves, mechanical autonomy,switch equipment etc.
Triangle garden shade sail is made by HDPE (High Density Polyethylene). ZNZ Industry makes the anti-UV rate of this product reach up to 95% through the new anti-UV process. This fabric is light and breathable.
Special Step Seals for Pistons GSD for reciprocated hydraulic system. GSD is a single-acting piston compact seal, consisting of a dynamic teflon seal and a standard O-ring with static low permanent deformation.
It is used widely in Crude oil tower vacuum system - Atmospheric and vacuum distillation, solvent dewaxing, crude oil vacuum distillation, torch gas energy recovery, gas boost, exhaust compression, tail gas collection, pressure feeding, oil and gas recove