| Material: | High Strength Steel |
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| Type: | Hexagon Head |
| Connection: | Common Bolt |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Audited Supplier XIAMEN QISHINE
XIAMEN QISHINE IMP. & EXP. Co., Ltd., is a globally recognized and renowned pipeline product supplier specializing in the provision of a wide array of pipeline essentials, from fasteners to gaskets. 
We take pride in catering to a broad range of clientele across various industries and projects worldwide, with a strategic focus on Engineering, Procurement, and Construction (EPC) companies and pipeline construction projects.
We have more than ten years of pipeline product development&sales experience, so we have a wealth of relevant experience and problem solving ability.
Introduction:
The API 20F Bolting ASTM A453 Gr.660 Hex Nut and Stud Bolt, is a highly specialized piece of hardware designed to meet the stringent requirements of heavy-duty industrial applications. Crafted to comply with international standards set by ISO, DIN, and API, it epitomizes durability, reliability, and precision, making it an indispensable choice in various engineering projects. In this comprehensive review, we delve deep into the features, benefits, and applications of this industry-grade fastener, alluringly showcasing its superiority in the market.
Specifications:
The Grade 660 classification of the ASTM A453 material signifies a product that exhibits extreme tensile strength, yield strength, and superior creep resistance, making it the go-to choice for applications that require resistance to high temperature and aggressive environments. The hex nut and bolt are also compliant with 20F Bolting specifications set by ISO/DIN/API, ensuring an extensive applicability scope across multiple industries.
Product Recommendation
Design and Build:
Our ISO 20F Bolting ASTM A453 Gr.660 Hex Nut and Stud Bolt is exquisitely designed to achieve a delicate balance of size, strength, and weight. The meticulous manufacturing process adheres to the highest standards of quality and consistency, ensuring each bolt offers the highest grade of performance. The Grade 660 material used for the bolt's construction is corrosion-resistant, featuring a formidable chromium-nickel-iron alloy with additions of titanium and beryllium, making it suitable for demanding applications.
Strength and Durability:
These bolts are renowned for their exceptional strength and longevity, capable of withstanding high pressure and temperatures up to 700 degrees Celsius. Their durability is further enhanced by the fact that they are resistant to both oxidation and carburization at high temperatures, making them perfect for use in harsh environments. The robust M42 size lends the bolt an enhanced ability to handle intense pressure and load, preventing any form of distortion or damage.
Xiamen Qishine Imp.&Exp. Co.,Ltd.
PRODUCT QUALITY CERTIFICATE
CUSTOMER:
Contract No:5330
Serial No:13(8)
DESCRIPTION DATE:2022-12-19
| /DESIGNATION: Fully threaded stud |
MATERIAL GRADE: A453 Gr.660 Cl.A | MATERIAL MARK:660A SN | ||||||||||||||||||||||||||||||
| /STANDARD:ISO 261-1998 | SPECIFIATIONS:ASTM A453/A453M-2017 | HEAT NO:222A-0954 | ||||||||||||||||||||||||||||||
Specs |
M80*860 | PO. Item | 13# | |||||||||||||||||||||||||||||
Qty/PCS |
20 | |||||||||||||||||||||||||||||||
| , %CHEMICAL COMPOSITION | ||||||||||||||||||||||||||||||||
elements |
C | Si | Mn | P | S | Cr | Ni | Mo | Al | Ti | B | V | ||||||||||||||||||||
norm values |
≤0.08 | ≤1.00 | ≤2.00 | ≤0.040 | ≤0.030 | 13.5-16.0 | 24-27 | 1.0-1.5 | ≤0.35 | 1.9-2.35 | 0.001-0.010 | 0.10-0.50 | ||||||||||||||||||||
Actual |
0.0432 | 0.597 | 1.32 | 0.0154 | 0.0012 | 14.1 | 25.4 | 1.15 | 0.198 | 2.30 | 0.0018 | 0.235 | ||||||||||||||||||||
| , MECHANICAL PROPERTY | ||||||||||||||||||||||||||||||||
INSPECT. ITEM |
Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % | Reduction % | -196ºC impact test J |
Hardness HB |
||||||||||||||||||||||||||
| Spec | ≥895 | ≥585 | ≥15% | ≥18% | - | HB248-341 | ||||||||||||||||||||||||||
| Actual | 960 | 690 | 25.5 | 29 | 62.14 65.34 64.25 | 302 | ||||||||||||||||||||||||||
| , HEAT TREATMENT | ||||||||||||||||||||||||||||||||
| ºC ºC METHOD: + 970ºC 720ºC Solid solution + Prescription Solid solution Prescription MEDIUM: water T T |
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| , SURFACE & CLASS | ||||||||||||||||||||||||||||||||
| THREAD CLASS:6g | ||||||||||||||||||||||||||||||||
| DIMENSIONAL AND SURFACE INSPECTION: / OK | ||||||||||||||||||||||||||||||||
| APPEARANCE TREATMENT: Color | ||||||||||||||||||||||||||||||||
Testconclusions |
,ISO 261-1998,ASTM A453/A453M-2017,. After Inspection , The quality of this product get the ISO 261-1998,ASTM A453/A453M-2017 standard of the pattern and the industry standard. |
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| :,... THE ABOVE MATERIAL IS MANUFACTURED IN ACCORDANCE WITH SPECIFIED SPECIFICATION AND IS SUBJECT TO RANDOM TEST AND INSPECTION.THE CERTIFICATE IS PREPRARED BASED ON THE TEST RESULTS WHICH ARE OBTAINED UNDER THE SUPERVISION BY THE INSPECTOR.THE INSPECTOR IS INDEPENDENT OF THE MANUFACTURER. |
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Inspectors: Inspect Engineers: Quality inspection seal
Applications:
The bolt is particularly relevant in the petrochemical industry, heat exchangers, steam generators in nuclear pressurized water reactors, gas turbine engine components, and subsea oil and gas extraction tools, among others. The universal design of the hex nut makes it compatible with various assemblies, significantly increasing the product's versatility.
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Audited Supplier 
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