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ASTM A307b GRB Heavy Hex Bolts

ASTM A307b GRB Heavy Hex Bolts is a ASTM A307 models.The ASTM A307 specification covers carbon steel bolts and studs ranging from 1/4″ through 4″ diameter. This is your everyday, run of the mill bolt specification often manufactured using A36 round bar. There are three grades A, B, and C* which denote tensile strength, configuration, and application. Refer to the Mechanical Properties Chart for the subtle strength differences within each grade.

Model:ASTM A307

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Product Description

A307 GradesA Headed bolts, threaded rods and bent bolts intended for general applications. ASTM A307b GRB Heavy Hex Bolts Suitable for extreme environments such as high temperature and pressure. BHeavy hex bolts and studs intended for flanged joints in piping systems with cast iron flanges.C*Nonheaded anchor bolts, either bent or straight, intended for structural anchorage purposes. The end of a grade C anchor bolt intended to project from the concrete will be painted green for identification purposes. Permanent marking is a supplemental requirement. *As of August 2007, grade C has been replaced by specification F1554 grade 36. We will continue to supply grade C, if required by the project

Product Introduction

Place of Origin	CHINA
Standard	ASTM A307b GRB Heavy Hex Bolts
HS CODE	7318159001
Brand Name	QBH
Certification	ISO9001
Material	35K, 40Cr, 35CrMo, SCM435，etc.
Size	M3-M64
Production Process	Cold forging≤300mm, Hot forging≤1000mm
Class	4.8/ 6.8/ 8.8/ 10.9/ 12.9
Delivery Time	Within 30 Days