| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Round Head |
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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:
In the field of fastening solutions, the High Strength B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is a leading product, offering formidable strength, exceptional durability and superior performance. Engineered in accordance with the highest standards of ASTM and ASME specifications, this hexagonal head screw is designed to meet the rigorous demands of various industrial applications. This comprehensive product review will examine the unique features, significant benefits, and diverse applications of this high-quality fastener.
Specifications:
The High Strength B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is manufactured to meet the rigorous specifications of the ASME B18.2.1 and ASTM A193 B7 standards. The ASME B18.2.1 standard is the benchmark for the dimensions and mechanical properties of general-purpose bolts, screws, and studs. The ASTM A193 B7 specification is synonymous with high-strength, high-temperature service, reflecting the exceptional durability and performance characteristics of this screw.
Product Recommendation
Design and Build:
The B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is a prime example of engineering precision and innovative design, showcasing exceptional craftsmanship and cutting-edge technology. The Xylan coating provides an enhanced layer of protection, improving the screw's corrosion and wear resistance. Meanwhile, the hexagonal head design provides ease of installation and a firm grip, ensuring secure and reliable fastening across a multitude of applications.
Strength and Durability:
The High Strength B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is renowned for its exceptional strength and long-term durability. The Chromium-Molybdenum steel (denoted by A193 B7) makes this screw highly resistant to tensile strength and impact, making it ideal for heavy-duty, high-pressure, and high-temperature applications.
Applications:
The A193 B7 Xylan Coated Hexagonal Head Screw's versatility and robustness have led to its extensive use across numerous industrial sectors. It is especially effective in the oil and gas, petrochemical, construction, and power generation industries, where high strength and resistance to harsh environmental conditions are paramount. The screw is particularly well-suited to high-stress applications, including pipeline flanges, pressure vessels, and heat exchangers.
| Xiamen Qishine Imp.&Exp. Co.,Ltd. | |||||||||||||||||||||||
| No.: QR-20-06 REV.B/2 | Certificate of Product Quality | ||||||||||||||||||||||
| ( As per EN 10204 type 3.1 ) | |||||||||||||||||||||||
| Customer: | CERTIFICATE NO.: | Y22120713 | |||||||||||||||||||||
| Normative References: ASTM A193/A193M GR B7--22 | DATE: | 07/Dec/22 | |||||||||||||||||||||
| P.O.No. | PART NO. | ITEM. | PART DESCRIPTION | Qty | Measured Value | ||||||||||||||||||
| Chemical Composition() | Mechanical Property | REDUCTION RATIO | ≥4:1 | ||||||||||||||||||||
| C | Mn | Si | S | P | Cr | Ni | Mo | V | Al | σb (Mpa) | σs (Mpa) | δ (%) | φ (%) | HARDNESS (HRC) | ºC | ||||||||
| AKV(J) | HEAT NO. | HEAT LOT NO./TRACEABLE NO. / | |||||||||||||||||||||
| 0.38 | 0.75 | 0.15 | 0.040 Max | 0.035 Max | 0.80 | - | 0.15 | - | - | 860 Min | 720 Min | 16 Min | 50 Min | 34 Max | 10x10mm | ||||||||
| 0.48 | 1.00 | 0.35 | 1.10 | - | 0.25 | - | - | ||||||||||||||||
| P22/000294 | - | 185 | Hex Head Bolt,1-8UNCx165-2A,A193 B7-HDG | 12 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 186 | Hex Head Bolt,1-8UNCx180-2A,A193 B7-HDG | 8 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 187 | Hex Head Bolt,1-8UNCx190-2A,A193 B7-HDG | 22 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 188 | Hex Head Bolt,1-8UNCx255-2A,A193 B7-HDG | 27 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 189 | Hex Head Bolt,1-8UNCx280-2A,A193 B7-HDG | 8 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 146 | Stud Bolt,1-8UNCx13-2A,A193 B7-HDG | 136 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 191 | Stud Bolt,1-8UNCx5-2A,A193 B7-HDG | 64 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| P22/000294 | - | 147 | Stud Bolt,1-8UNCx6-1/2-2A,A193 B7-HDG | 240 | 0.41 | 0.84 | 0.23 | 0.01 | 0.003 | 1 | - | 0.22 | - | - | 1022 | 937 | 18.5 | 60 | 29,30,31 | - | 20EB03598 | C6220906-6 | |
| MACROSTRUCTURE (As per ASTM E381 S1,R1,C2):Qualified Product. | MICROSTRUCTURE (Predominately tempered martensite):Qualified Product. |
DECARBURIZATION TEST (As per ASTM F2328):Qualified Product. |
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| NDE | MT: ASTM A962 S55. ACCEPTANCE CRITERIA AS PER ASTM S57. ACCEPTABLE. | UT: AS PER ASTM A388/388M AND ASTM E127 ACCEPTANCE CRITERIA: AS PER API 6A STEMS PSL3, ACCEPTABLE. | PT: ASTM A962 S56. ACCEPTANCE CRITERIA AS PER ASTM S57. ACCEPTABLE. | ||||||||||||||||||||
| HEAT TREATMENT DETAIL | Method | () | COMPLIANCE | ||||||||||||||||||||
| Furnace type | Temp.ºC | holding time (M) | Cooling Method | We hereby certify that above material manufactured, sampling, tested and inspected according to customer order requirements, conform to API 20E, BSL-1. There is no weld repair. The material is free from radioactive contamination. ,,,API 20E, BSL-1... | |||||||||||||||||||
| Quenching | Electric furnace | 860 | 1.5 h. | Oil | |||||||||||||||||||
| Tempering | Electric furnace | 620 | 2 h. | Air | |||||||||||||||||||
| - | - | - | - | - | |||||||||||||||||||
| - | - | - | - | - | |||||||||||||||||||
| EQUIPMENT CALIBRATION: | CAL.DATE: 2022.06.07 | CAL.DUE DATE: 2023.06.06 | |||||||||||||||||||||
| DIMENSIONAL & THREAD FORMS: Qualified Product. | VISUAL CHECK: Qualified Product. | COATING: Qualified Product. | |||||||||||||||||||||
| PREPARED BY | QC MANAGER | DATE | |||||||||||||||||||||
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