RAYCHIN LIMITED, we are materials experts who focus only on fasteners made from the highest performance specialty metals for the most challenging and extreme applications.

• Stainless Steel Series: Martensitic Stainless Steel, Ferritic Stainless Steel, Austenitic Stainless Steel, Austenitic-Ferritic (Duplex) Stainless Steel and Precipitation Hardening Stainless Steel.

• Super Alloys Series: Nickel-based Alloy, Cobalt-based Alloy, Iron-based Alloy, Molybdenum-based Alloy, ‌Titanium-based Alloy, Copper based Alloy, ‌Zirconium Alloy.

• Alloy Steel Series: Low Alloy Steel, Medium Alloy Steel, High Alloy Steel, Special Alloy Steel.

U-Bolts | Stainless Steel & Alloy U-Bolts for Piping & Structural Applications | RAYCHIN Manufacturer

RAYCHIN manufactures high-performance U-bolts in 25+ alloys including 17-4PH, Monel, Titanium & Hastelloy. Custom U-bolts, pipe clamps & structural U-bolts compliant with ASME, DIN, ISO, ASTM standards. Global supplier for marine, chemical & construction industries.

High-Performance U-Bolts for Pipe Clamping, Structural Support & Marine Applications

RAYCHIN is a premier manufacturer of precision-engineered U-bolts (also called pipe clamps, U-shaped bolts, or anchor U-bolts) — essential fasteners designed for securing piping systems, structural components, and equipment in demanding environments. Our U-bolts provide reliable clamping force, vibration resistance, and long-term durability in corrosive, high-temperature, and high-stress applications. We fabricate these critical components from over 25 advanced alloys to meet stringent requirements in marine, chemical processing, oil & gas, construction, and power generation industries worldwide.

U-Bolt Types & Classifications

We manufacture comprehensive U-bolt configurations to address diverse industrial requirements:

1. Standard U-Bolts:

• Round Bend U-Bolts: Feature consistent radius bends with threaded legs, manufactured to ASME B18.2.1, DIN 3570, ISO 3266, and JIS B1181 standards.

• Square Bend U-Bolts: Square-cornered design for maximum contact surface, compliant with ASME B18.2.1 and customer specifications.

• Pipe Clamp U-Bolts: Specifically designed for pipe supporting applications per MSS SP-58, MSS SP-69, and ISO 1461 standards.

2. Special Application U-Bolts:

• Threaded Rod U-Bolts: Continuous threading through bend section for adjustable applications.

• Shoulder U-Bolts: Incorporate precision shoulders for machinery mounting and alignment applications.

• Marine U-Bolts: Heavy-duty designs for mooring, rigging, and deck hardware applications.

• Custom U-Bolt Designs: Manufactured to exact OEM specifications with unique bend radii, leg configurations, thread types, and special features.

Material Grades & International Standard Specifications

Our U-bolts are precision-formed from the following advanced material systems with full international standard compliance:

1. Precipitation-Hardening Stainless Steels:

• 17-4 PH (UNS S17400): Supplied to ASTM A564 Type 630, AMS 5643, DIN 1.4542 in H900, H1025, H1150 tempers for high-strength structural U-bolts.

• PH 13-8 Mo (UNS S13800): Manufactured per ASTM A564 Type 625, AMS 5629 for superior corrosion resistance and strength.

2. Nickel-Based Superalloys:

• Inconel® Alloys: Inconel 718 (UNS N07718/AMS 5663), Inconel 625 (UNS N06625/ASTM B446), Inconel 600 (UNS N06600) for high-temperature exhaust system clamps.

• Monel® Alloys: Monel K500 (UNS N05500/AMS 4676), Monel 400 (UNS N04400) for marine hardware and offshore U-bolts.

• Hastelloy® Alloys: Hastelloy C276 (UNS N10276/ASTM B574), C22 (UNS N06022), B2 (UNS N10665) for severe chemical processing environments.

• Waspaloy (UNS N07001): Per AMS 5708, AMS 5824 for aerospace and high-temperature applications.

• Nimonic® Series: Nimonic 80A (UNS N07080), Nimonic 90 (UNS N07090) compliant with BS HR 501/502 standards.

3. Duplex & Super Duplex Stainless Steels:

• Duplex Steel: Duplex 2205 (UNS S32205) to ASTM A193 B8S, EN 1.4462 specifications for offshore platform pipe clamps.

• Super Duplex Alloys: Alloy 926 (UNS N08926), AL-6XN® (UNS N08367) meeting ASTM A193 B8S, NACE MR0175.

4. Titanium Alloys:

• Grade 5 Titanium (Ti-6Al-4V): UNS R56400 per AMS 4928, ASTM F467 for lightweight marine U-bolts.

• Grade 2 Titanium: UNS R50400 to ASTM B348, AMS 4921 for chemical processing pipe clamps.

5. Refractory & Exotic Metals:

• Tantalum (UNS R05200): ASTM B365, AMS 7845 for chemical equipment U-bolts.

• Zirconium 702 (UNS R60702): ASTM B550, ASME SB550 for acid handling applications.

• Molybdenum (UNS R03600) & Tungsten: For extreme temperature applications.

6. Specialty Alloys:

• Nitronic® Alloys: Nitronic 60 (UNS S21800), Nitronic 50 (UNS S20910) to ASTM A193 B8N for high-strength, wear-resistant U-bolts.

• High-Performance Stainless: 254 SMO (UNS S31254/EN 1.4547), 310SS (UNS S31000), Alloy 20 (UNS N08020), Alloy 330 (UNS N08330).

• Cobalt Alloys: MP35N (UNS R30035/AMS 5844), MP159 (AMS 5846) for ultra-high strength applications.

• Iron-Based Superalloy: A286 (UNS S66286) to AMS 5731, ASTM A453 Grade 660.

7. Aluminum Alloy:

• Aluminum 7075 (UNS A97075): AMS QQ-A-225/9, ASTM F467 in T6, T73 tempers for lightweight aerospace U-bolts.

8. Pure Nickel & Incoloy:

• Nickel 200 (UNS N02200): ASTM B160, ASME SB160.

• Incoloy® Alloys: Incoloy 825 (UNS N08825), Incoloy 925 (UNS N09925).

Custom U-Bolt Manufacturing Services

RAYCHIN provides complete custom U-bolt manufacturing from your technical specifications:

• Standards Compliance: ASME B18.2.1, DIN 3570, ISO 3266, MSS SP-58, ASTM A193, and customer drawings.

• Bending Capabilities: Cold bending up to 4-inch diameter, hot bending for larger sizes, precision radius control.

• Threading Options: Rolled threads, cut threads, special thread forms, continuous threading.

• Surface Treatments: Hot-dip galvanizing, electroplating, XYLAN coatings, passivation, electropolishing.

• Full Processing: CNC bending, threading, heat treatment, surface finishing, assembly with nuts/washers.

• Quality Assurance: Complete MTRs (EN 10204 3.1), dimensional verification, load testing, compliance with ISO 9001, PED, NACE MR0175.

Industry Applications

• Marine & Offshore: Pipe support systems, deck fittings, mooring hardware (ABS, DNV, LR certified)

• Chemical Processing: Pipeline clamps, reactor supports, tank farm installations

• Oil & Gas: Wellhead equipment, flowline supports, compressor station piping

• Power Generation: Boiler supports, turbine piping, heat exchanger mounting

• Construction & Infrastructure: Structural connections, seismic bracing, curtain wall systems

• Transportation: Exhaust system mounting, chassis components, cargo securing

Why Choose RAYCHIN?

• Bending Expertise: CNC bending technology for precise radius control

• Large Diameter Capability: Capacity for U-bolts up to 6-inch diameter in select materials

• Material Specialization: 25+ years experience with corrosion-resistant U-bolts

• Complete Assemblies: Supply of full clamp assemblies with nuts, washers, and saddles

• Certification Experience: Products certified to DNV, ABS, PED, NACE standards

• Global Supply: Reliable supplier to North America, Europe, Asia-Pacific, Middle East markets

Request U-Bolt Quotation
Contact RAYCHIN for engineering consultation and competitive pricing. Submit your drawings for pipe U-bolts, structural U-bolts, or custom U-shaped fasteners.

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