| 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 realm of fastening solutions, the High Strength B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw stands out, bringing together formidable strength, exceptional durability, and superior performance. Engineered to 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 delves into the unique features, significant benefits, and diverse applications of this top-of-the-line fastener.
Specifications:
The High Strength B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is crafted to comply with the stringent requirements of the ASME B18.2.1 and ASTM A193 B7 standards. The ASME B18.2.1 standard governs 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:
Exemplifying the finest in engineering precision and innovative design, the B18.2.1 A193 B7 Xylan Coated Hexagonal Head Screw is a testament to exceptional craftsmanship and cutting-edge technology. The Xylan coating offers a superior layer of protection, enhancing 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 synonymous with exceptional strength and long-term durability. The Chromium-Molybdenum steel (denoted by A193 B7) confers upon this screw high tensile strength and impressive toughness, rendering it ideal for heavy-duty, high-pressure, and high-temperature applications.
Applications:
The versatility and robustness of the A193 B7 Xylan Coated Hexagonal Head Screw have led to its extensive use across numerous industrial sectors. It's particularly effective in oil and gas, petrochemical, construction, and power generation industries, where high strength and resistance to harsh environmental conditions are crucial. The screw finds prominent use in high-stress applications such as pipeline flanges, pressure vessels, heat exchangers, and more.
| 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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