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ASTM A307 Grade B Heavy Hex Bolts
Item No.：
A-002
Category：
Summary
We passed the ISO9001:2000 quality management system certification in 2019, and organized and trained an elite team of professional production, inspection, sales and distribution.
Tel: +86-574-86520006
E-mail: info@nbasme.com，sales@nbasme.com
Description
ASTM A307
ASTM A307 This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes 1⁄4 in. through 4 in.
A307 Grades Description
|
A |
|
Grade A bolts and studs having a minimum tensile strength of 60 ksi and intended for general applications |
|
B |
|
Grade B bolts and studs having a tensile strength of 60 to 100 ksi and intended for flanged joints in piping systems with cast iron flanges |
|
C |
|
As of August 2007, grade C replaced by Specification F1554 Gr.36. We will continue to supply grade C, if required by the project. |
A307 Mechanical Properties
|
Grade |
Tensile strength, ksi |
Yield point, min ksi |
Elongation in 2 in., min, % |
|
A |
60 min |
--- |
18 |
|
B |
60 - 100 |
--- |
18 |
|
C |
58 - 80 |
36 |
23 |
A307 Chemical Requirements for Grades A and B Bolts and Studs(%)
|
|
Heat Analysis |
Product Analysis |
|
Carbon, max |
0.29 |
0.33 |
|
Manganese, max |
1.20 |
1.25 |
|
Manganese, max |
0.04 |
0.041 |
|
Sulfur, max |
|
|
|
Grade A |
0.15 |
a |
|
Grade B |
0.05 |
0.051 |
a. Resulfurized steel is not subject to rejection based on product analysis for sulfur.
Recommended Nuts & Washers
|
Nuts |
Washers |
||
|
A307 Grades A |
A307 Grade B |
||
|
1/4 to 1 1/2 in. |
1-5/8 to 4 in. |
1/4 - 4 in. |
|
|
A563 Grade A(A.K.A Grade 2) |
A563A Heavy Hex |
A563A Heavy Hex |
ASTM F844 (USS) |
About Us
We are one of the largest fastener manufacturers in Ningbo, China.
Over the years we have established ourselves as a market leader and are recognized for exceptional service, timely delivery, competitiveness, and total solutions.
We have more than 150 employees, including more than 30 technical experts, and we have rich production experience. And we are committed to fully understanding our clients' needs and wishes.
FAQ
1.Q: Can you send me samples?
A: Sure. We can send you our samples, please feel free to contact us at any time.
2.Q: Can the hex bolt be customized as our need, such as put on our logo?
A: Surely our hex bolt can be customized as your need, put on your logo is also available.
3.Q: What about the transportation?
A: Usually we take seaway, because it's more convenient and cheaper.
4.Q: What are your terms of payment?
A: T/T or L/C.
Online Message
Thank you for your attention to us. If you have any needs or comments,please leave us a message.
SERVICE HOTLINE:
Address：No. 100, Tianshen Road, Tiangu Industrial Zone, Jiulonghu Town, Zhenhai District, Ningbo, Zhejiang, China.
M.T.：+86-18967865853
TEL：+86-574-86520006
E-mail：info@nbasme.com，sales@nbasme.com
+86-18967865853
+86-574-86520006
info@nbasme.com
sales@nbasme.com
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