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A193 B7 Fully Threaded Bolt
QS Fastener: A193 B7 Fully Threaded Bolt
Product : Fujian A193 B7 Fully Threaded Bolt
Type: Fully Threaded
Thread: 9 UNC
Size : 7/8 Inch
Length: 110 mm
Standard: API 20E BSL 1
Material: ASTM A193 B7
Type: Fully Threaded
Thread: 9 UNC
Size : 7/8 Inch
Length: 110 mm
Standard: API 20E BSL 1
Material: ASTM A193 B7
Quantity
ASTM A193 B7 Fully Threaded Bolts: The Premier Choice for High-Pressure Pipe Flange Connections
In industrial equipment assembly, bolts may be small in size, yet they bear the entire weight of system safety and performance. For high-pressure, high-temperature pipe flange connections in particular, A193 B7 Fully Threaded Bolt have become an indispensable critical component, thanks to their exceptional strength, reliability, and stability. Our 7/8-inch x 110 mm B7 bolts are engineered precisely to meet these demanding requirements.
In industrial equipment assembly, bolts may be small in size, yet they bear the entire weight of system safety and performance. For high-pressure, high-temperature pipe flange connections in particular, A193 B7 Fully Threaded Bolt have become an indispensable critical component, thanks to their exceptional strength, reliability, and stability. Our 7/8-inch x 110 mm B7 bolts are engineered precisely to meet these demanding requirements.
Core Specifications and Design Advantages
These bolts are manufactured strictly to the 9 UNC (Unified National Coarse) fully threaded specification. The fully threaded design means the entire shank is covered with threads from end to end. Compared to partially threaded bolts, this provides a larger contact area and greater adjustment flexibility, enabling optimal preload during assembly and ensuring a tight, leak-free flange connection.
These bolts are manufactured strictly to the 9 UNC (Unified National Coarse) fully threaded specification. The fully threaded design means the entire shank is covered with threads from end to end. Compared to partially threaded bolts, this provides a larger contact area and greater adjustment flexibility, enabling optimal preload during assembly and ensuring a tight, leak-free flange connection.
- Dimensional Parameters: 7/8 inch (approx. 22.23 mm) in diameter, 110 mm in length. This is a widely adopted standard size in pipe flange connections, particularly well-suited for scenarios where space is limited yet high-strength clamping is essential.
- Thread Specification: 9 UNC (9 threads per inch, Unified National Coarse). Coarse threads exhibit superior stability under vibration, better fatigue resistance, and a lower risk of thread stripping, making them the ideal choice for heavy industrial installations.
Material Science and Performance Characteristics
A bolt's performance is fundamentally determined by its material. Our bolts are made from ASTM A193 Grade B7 alloy steel, a chromium-molybdenum steel that has undergone quenching and tempering heat treatment. Its core advantages include:
A bolt's performance is fundamentally determined by its material. Our bolts are made from ASTM A193 Grade B7 alloy steel, a chromium-molybdenum steel that has undergone quenching and tempering heat treatment. Its core advantages include:
- Exceptional High-Temperature Strength: B7 material is specifically engineered for high-temperature service. It maintains excellent high tensile strength and yield strength at temperatures up to 450°C (approx. 850°F), far exceeding the capabilities of ordinary carbon steel bolts.
- Reliable Low-Temperature Toughness: This material is equally well-suited for environments as low as -40°C, demonstrating outstanding low-temperature impact toughness and enabling an extremely wide range of application.
- Corrosion-Resistant Coating: To withstand the harshest industrial environments, we apply a high-performance anti-corrosion coating to the bolt surface. This coating not only provides a robust barrier against moisture, chemicals, and atmospheric corrosion to ensure long-term service life, but its thickness is also carefully controlled to guarantee smooth thread engagement.
Authoritative Certifications and Quality Assurance
Our commitment to quality extends far beyond words. To provide you with definitive performance assurance, our ASTM A193 B7 fully threaded bolts strictly adhere to and are certified to the following authoritative standards:
Our commitment to quality extends far beyond words. To provide you with definitive performance assurance, our ASTM A193 B7 fully threaded bolts strictly adhere to and are certified to the following authoritative standards:
- API 20E BSL-1 Certification: This is a critical certification for the oil and gas industry. BSL-1 (Base Specification Level 1) signifies that a rigorous, controlled system has been established across every link, from raw material traceability and manufacturing processes to final inspection. This provides significant advantages in quality assurance and expected performance for critical applications, ensuring full lifecycle traceability and reliability.
- Comprehensive Material Test Reports: With each order batch, we can provide a mill test certificate conforming to EN 10204 Type 3.1, which clearly documents verified data on chemical composition, mechanical properties (tensile strength, yield strength, elongation, reduction of area), and hardness testing. All tests are conducted in accredited laboratories.
Typical Application Fields
Leveraging the above advantages, our B7 fully threaded bolts are extensively used in:
- Oil & Gas: Wellhead equipment, Christmas trees, pipe flanges, pressure vessels.
- Petrochemical & Refining: Heat exchangers, reactors, valve connections.
- Power Generation: High-pressure steam pipe flanges for boilers and steam turbines.
- General Heavy Industry: Any structural connection demanding high-strength, high-temperature fasteners.
- Oil & Gas: Wellhead equipment, Christmas trees, pipe flanges, pressure vessels.
- Petrochemical & Refining: Heat exchangers, reactors, valve connections.
- Power Generation: High-pressure steam pipe flanges for boilers and steam turbines.
- General Heavy Industry: Any structural connection demanding high-strength, high-temperature fasteners.
Comprehensive Product Range and Customization Services
We understand that every project has its unique requirements. Therefore, in addition to the standard 7/8-inch x 110 mm specification, our A193 B7 Fully Threaded Bolt are available in a wide range of sizes from 1/2 inch up to 2 inches and even larger diameters, with lengths customizable upon request. Whether you require them paired with ASTM A194 Grade 2H heavy hex nuts, or need a specific coating or packaging solution, we welcome your inquiry at any time.
We understand that every project has its unique requirements. Therefore, in addition to the standard 7/8-inch x 110 mm specification, our A193 B7 Fully Threaded Bolt are available in a wide range of sizes from 1/2 inch up to 2 inches and even larger diameters, with lengths customizable upon request. Whether you require them paired with ASTM A194 Grade 2H heavy hex nuts, or need a specific coating or packaging solution, we welcome your inquiry at any time.
Please contact us today and let us know your specific application and technical requirements. Our team of fastener experts will provide you with a satisfactory answer, professional technical selection support, and a highly competitive preferential quotation.
Our Quotation
| Russia Mexico Customers Quotation | |||
| Xiamen Qishine Imp.&Exp. Co.,Ltd. Address: Room 604, No.1 Fengze Yuan, Jinfeng Li, No.17 Jinsheng Li, Huli District, Xiamen, China | |||
| Email:qishine@qishine.com | Website: http://www.cnqishine.com | ||
| Tel: +86-592-5255951 | Date: 1st Apr. 2022 | ||
| Quotation Ref.: 22QS0401 | Contact Person: Amy | ||
| Price Valid Time: 7 days from the date of quotation. | |||
| Payment Terms: T/T 100% in advance to start the production. | |||
| Production time: 35 days from the date of receiving your advance payment. | |||
| Documents: CI&PL, B/L and Mill Test Certificates EN.10204.3.1. | |||
| Item | A193 B7 Bolt Description | Description | Qty |
| 1 | Stud Bolt M27 x 274mm 1 nut(GB6175) B7/2H PTFE Coated | SET | 32 |
| 2 | Hex Head Bolt GB5783, B7, M10 X 40MM Black | EA | 300 |
| Total | |||
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