Hangzhou Chain Factory, the predecessor of Hangzhou Dun Pai Chain Co., Ltd which is subsidiary of Hangzhou DongHua Chain Group, was established in 1951, By working hard for more than 60 years, Hangzhou Chain Factory people once created glorious history. The main products are 08B-2, 10A-1 which are continuously awarded "National Silver Quality Medal" since 1980, 16A-1 awarded "National Silver Quality Medal" in 1990 as well as 06B-1, 08A-1, 12A-1, 16A-1 attaining "Zhejiang Province First-Class Product Title".
Since 1960, "DunPai chains have been exported to more than 30 countries and districts, such as Europe, USA, the Middle East, Southeast Asia as well as HongKong, Macao and so on. Because of high quality and great reputation, "Dun Pai" chain win applaud from customer.
Since become one of subsidiaries of Hangzhou DongHua Chain Group, DunPai Chain Co., Ltd was injected new energy. Recent years, depending on technical innovation and advanced management idea of DongHua Chain Group, DunPai Chain Co., Ltd has continuously developed various special chains to meet the new demands of domenstic market and overseas market. Now "DunPai chain" is one of the three brands of Donghua Chain Group. These three brands are "DONGHUA", "DP" and "ZQ". DunPai Chain Co., Ltd has independent managerial authority and exported output value is 50, 000, 000RMB while total output value is 150, 000, 000RMB.
Keep improving and innovating, Satisfy customer's demands are our promission. Hope you could constantly support and believe in Hangzhou Dun Chain Co., Ltd and its "DunPai "chain.
Chain Instruction
Raw material: C45
Standard: OEM according customer's sample or drawings
| Materials Available |
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420 |
| 2. Steel:C45(K1045), C46(K1046),C20 |
| 3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40) |
| 4. Bronze: C51000, C52100, C54400, etc |
| 5. Iron: 1213, 12L14,1215 |
| 6. Aluminum: Al6061, Al6063 |
| 7.OEM according to your request |
| Surface Treatment |
Annealing, natural anodization, heat treatment, polishing, nickel plating, chrome plating, znic plating,yellow passivation, gold passivation, satin, Black surface painted etc. |
| Products Available |
sprockt chains, pulley, shafts(axles, spline shafts, dart shafts),gears (pinions, wheels gear rack) bearing, bearing seat, bushing, coupling, lock assembly etc. |
| Processing Method |
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly |
| QC : |
Technicians self-check in production,final-check before package by professional Quality inspector |
| Size |
Drawings |
| Package |
Wooden Case/Container and pallet, or as per customized specifications |
| Certificate |
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009 |
| Advantage |
Quality first Service superior , Advanced equipment,Experienced workers,Perfect testing equipment |
| Lead Time |
15-25days samples. 30-45days offcial order |
Audited Supplier 
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