General Introduction
Zhejiang Chaoboer Hardware Co., Ltd was founded in 2001, is a professional manufacturer of various standard and non-standard bolts and screws. We had passed GB/T19001-2008/ISO9001: 2008 quality certification system and CE certificate. At present , we have 15 production lines of multi-automatic cold formers, 4 production lines of heat treatment, 2 production lines of spheroidizing annealing and 4 production lines of hot dip galvanized. Our workshop covers an area of more than 10,000 square meters. More than 90% of our products are exported to foreign countries and regions .
Welcome to our company for standard hex bolts, hex socket bolts , hex flange bolts , carriage bolts ,square bolts , T-bolts according to DIN/IFI/BS/JIS/GB ,and various non-standard bolts. Class ranges from 4.8 to 12.9 in DIN ( from 2 to 8 in IFI ). Diameter ranges from 5mm to 24mm in DIN (from 1/4” to 1” in IFI). Our monthly output is up to 1,000 tons . we have been serving buyers in the US, Europe , Canada, Australia , Japan, Korea and other markets .
In order to better ensure product quality and develop new products , we has a fairly complete and experienced R & D team and strict enforcement of product quality inspection personnel and a set of testing equipments . Our testing equipments as below: universal testing machine (1000KN), Automatic Digital Rockwell Hardness Tester (150A), Digital Vickers Hardness Tester (HV1000 with microscopic ), metallographic cutting machine, micrometer, vernier caliper, through regulations , etc.
The motto of our company are: Customers First, Service Best! We will do our best to meet the requirements of our customers all over the world!
Main Products
DIN/ASME/IFI/GB/AS Standard: Hex Bolt, Carriage Bolt, Hex Flange Bolt, Hex Socket Head Bolt, Bolt & Screw, and Non-Standard Bolts. Dia from M5 To M24 (1/4" To1"), length: from 8mm To 300mm.

1. hex bolt2. carriage bolt3. hex flange bolt4. hex socket head bolt5. guardrail bolt6. heavy hex bolt7. square head bolt8. stamping9. hex nut10.coulping nut
Most Competitive Products
DIN/ASME/IFI/GB/AS Standard: Hex Bolt, Carriage Bolt, Hex Flange Bolt,Hex Socket Head Bolt, Bolt & Screw, and Non-Standard Bolts. Dia from M5 To M24 (1/4" To1"), length: From 8mm To 300mm.

1. hex bolt2. carriage bolt3. hex flange bolt4. hex socket head bolt5. guardrail bolt6. heavy hex bolt7. square head bolt8. stamping9. hex nut10.coulping nut