ASTM A325 A490 Structural Fasteners Heavy Hex Bolt Structural Bolts Socket Head Cap Bolt U Bolt Carriage Bolt Flange Bolt Coach Bolt HDG for Buildings

Our company adheres to the tenet of 'Because of focus, so professional!' After long-term unremitting efforts, our company has developed into a modern cap screw TS16949, Bolt ISO9001:2008, carbon steel wires manufacturing enterprise with strong core competitiveness. Thence, the coupling of brand and culture can make it easy to maximize the company's value. We focus on customer needs, meet customer requirements and strive to exceed customer expectations. Brand building and promotion is our unwavering goal, and providing high quality products to our customers is our unchanging promise.

Shanghai Jinrui Norm Parts Supplies Co.,Ltd is one of the leading gb carriage bolt manufacturers and suppliers in China, welcome to buy gb carriage bolts, gb standard carriage bolt from our factory and company.

This standard of the GB carriage bolt stipulates the thread size from M5-M20. As the aquare neck,the depth of square shall be measured,parallel to th axis of bolt at the midpoint of the flats   of square,from the bottom of square to the bearing surface for bolts having flat bearing surface type heads,and to the intersectio of flats of square with the conical bearing surface for bolts having countersunk head.The corners of square neck may be rounded to the extent specified in the respective dimensional tables and need not be filled out for the total depth of square.

We need to add value to our ASTM A325 A490 Structural Fasteners Heavy Hex Bolt Structural Bolts Socket Head Cap Bolt U Bolt Carriage Bolt Flange Bolt Coach Bolt HDG for Buildings through technological innovation, thereby enhancing our competitiveness in the global market. Society is the foundation of enterprise development, so we have always fulfilled our social responsibility with a responsible image over the years. Our company will always adhere to the quality policy of 'always provide high quality products and services to meet customer expectations'.