Haihao Group supplies A320-L7 stud bolts and ASME B16.5 LF2 blind flanges for Russian low-temperature project
Haihao Group is proud to announce the successful supply of A320-L7 stud bolts with ASTM A194 Grade 7 nuts and ASME B16.5 LF2 Class 1 blind flanges to a valued Russian client for a critical low-temperature piping application. This delivery demonstrates our capability to provide precision-manufactured, certified components for harsh and demanding environments such as cryogenic and hydrocarbon service.
ASTM A194 Grade 7 Stud Bolts With Nuts packed for shipment
These high-performance stud bolts and nuts are designed specifically for use in low-temperature and pressure-rated environments such as petrochemical plants, LNG systems, and oil & gas facilities.
Stud Material:ASTM A320 Grade L7
Nut Material:ASTM A194 Grade 7
Thread Type:8UN (ASME B1.1 Series)
Thread Class:2A (Stud) / 2B (Nut)
Size:2 inch diameter, 560 mm length
Type:UN heavy hexagonal nuts, two per stud
Design Specs:BS 4882, ASME B18.2.2
Mandatory Specification:MESC SPE 81/002 (2019)
Certification:EN 10204 3.1, ISO 10474 3.1
These A320-L7 stud bolts with ASTM A194 Grade 7 nuts are ideal for sub-zero service and are commonly used in flanged joints for heat exchangers, vessels, valves, and pressure piping systems. They provide excellent mechanical strength, impact resistance at low temperatures, and comply with major industry standards.
ASME B16.5 Blind Flange LF2 Class 1
Haihao Group also provided ASME B16.5 blind flanges made from ASTM A350 LF2 Class 1 low-temperature carbon steel, precisely machined and tested for reliability under severe environmental conditions.
Material:ASTM A350 Grade LF2, Class 1
Flange Type:Blind, Raised Face (RF)
Size:DN 300
Pressure Rating:Class 600
Design Standard:ASME B16.5
Service:Suitable for low-temperature applications
Mandatory Specs:MESC SPE 76/211 (2018), MESC SPE 76/100 (2013 & 2018)
Inspection Certification: ISO 10474 3.1B / EN 10204 3.1
The LF2 CLASS 1 blind flange offers excellent notch toughness and is widely used in oilfield operations, LNG systems, and pressure vessels where resistance to brittle fracture is essential.
Dimension measurement of ASME B16.5 Blind Flange LF2 Class 1
Full Traceability and Quality Compliance
All materials were delivered with complete documentation including:
- Vendor Declaration of Compliance (B07)
- Material Test Certificates (K09)
- NACE MR0175 Compliance (K10, where applicable)
Haihao Group strictly adheres to project-specific and international quality standards, ensuring that each component meets mechanical, chemical, and dimensional requirements.
Why Choose Haihao Group?
- Over 40 years of manufacturing experience
- In-house testing facilities: PMI, UT, impact, and tensile
- Fast production turnaround for custom lengths and thread types
- ISO-certified and EPC-project qualified supplier
- Global shipping experience to Russia, Middle East, Europe, Southeast Asia
Whether you require standard fasteners or engineered-to-order flanges, Haihao Group offers a complete solution backed by engineering expertise, strict quality control, and global logistics support.
Contact Haihao Group today for certified A320-L7 stud bolts, ASTM A194 Grade 7 nuts, or ASME B16.5 LF2 blind flanges for your next low-temperature or cryogenic service project. Email:sales@haihaogroup.com