railways, ports , etc., should be strictly hook factory inspection

Hook a very wide classification , generally include: shackles, rings , ring, pear ring , long rings, composite rings, S hook , nose hook, American hook claw hook , eye slip Hand pallet jacks-shaped , with the insurance card rings screws , chain shackle, are unique, innovative , high quality, safe , suitable for factories, mines , petroleum, chemical and marine terminals . Ensure safety, quality and safety factor , static load up to 3 times . Capacity from 5 tons to 150 tons.
Edit this paragraph technical requirements 1 , the purchase of the hook should be the manufacturer's certificate and other technical documents before use ; important sector procurement hook as : railways, ports , etc., should be strictly hook factory inspection ( testing ) . Claw hook
2, the hook may not affect the safe use of Manual stacker deficiencies ; hook welding defects shall ; hook surfaces should be smooth, without cracks , folding , acute angle , burr, peeling and splitting , over-burning and other defects.
3, the shortest distance from the opening of the hook proper position selected print easy to wear two signs, the sign of the distance measured as the degree of opening is used to detect changes in the basis .
4, the hook material can be selected 20 high-quality carbon steel or special materials hook DG20Mn, DG34CrMo other forged steel, prohibited the use of cast hook . Plate hook material is generally applied A3, C3 ordinary carbon steel, low alloy steel or 16Mn
5 , homemade hook should meet the technical conditions GB 10051.1-88 ~ GB 10051.5-88 provisions