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U-Bolt

Automotive chassis Truck leaf springs Pipe fixing Photovoltaic brackets Power engineering Building steel structures

U Bolt
U-Bolt

Product Introduction

A U-bolt is a fastener with a U-shaped structure, threaded at both ends, used to secure pipes, steel structures, mechanical components, etc., providing clamping and positioning.

WT Fasteners specializes in producing various specifications of U-bolts, including standard U-bolts, pipe clamp U-bolts, square U-bolts, automotive U-bolts, and custom non-standard U-bolts. We can provide different materials, sizes, thread specifications, and surface treatment options based on customer requirements.

U-bolts are widely used in automotive chassis, pipe installation, construction engineering, solar panel brackets, power facilities, mechanical equipment, and industrial fixing applications.


Product Features

1. Secure Clamping Structure

The U-shape effectively wraps and secures pipes, rods, and other components, providing reliable clamping force.

2. High-Strength Manufacturing

Made from high-quality carbon steel, alloy steel, and stainless steel, offering excellent load-bearing capacity and fatigue resistance.

3. Multiple Specification Options

Supports various diameters, widths, heights, and thread specifications to meet different installation needs.

4. Anti-Corrosion Treatment

Available with electro-galvanizing, hot-dip galvanizing, stainless steel, and other surface treatments to extend service life in outdoor environments.

5. Custom Non-Standard Options

Can customize special sizes and structures based on customer drawings, samples, or usage requirements.


Product Parameters

Product Name:
U-Bolt

English Name:
U Bolt / U-Bolt Clamp

Common Standards:

  • DIN 3570
  • ASTM A307
  • GB Standard
  • Customer Drawing Standards

Materials:

  • Q235 Carbon Steel
  • 45# Steel
  • Alloy Steel
  • Stainless Steel 304
  • Stainless Steel 316

Strength Grades:

  • Grade 4.8
  • Grade 8.8
  • Grade 10.9

Specification Range:

M6-M42
(Custom non-standard sizes available)

Processing Methods:

  • Cold Bending
  • Hot Bending
  • Hot Forging

Thread Types:

  • Metric Coarse Thread
  • Metric Fine Thread
  • Imperial Thread

Surface Treatments:

  • Electro-Galvanizing
  • Hot-Dip Galvanizing
  • Black Oxide
  • Dacromet
  • Stainless Steel Natural Finish

Product Types

Pipe U-Bolt

Used to secure water pipes, steel pipes, mechanical pipelines, etc. This is the most common type.

Square U-Bolt

Suitable for square tubes, steel structures, and special installation positions.

Automotive U-Bolt

Commonly used in automotive suspension systems and leaf spring fixing.

Heavy Duty U-Bolt

Made from higher-strength materials, suitable for heavy equipment and engineering projects.

Custom U-Bolt

Customized dimensions, bend radius, and thread length according to customer drawings.


Application Areas

U-bolts are widely used in:

  • Automotive chassis systems
  • Trucks and trailers
  • Pipe installation projects
  • Steel structure engineering
  • Solar panel bracket systems
  • Wind power equipment
  • Power facilities
  • Industrial machinery
  • Agricultural machinery

Packaging Methods

Available according to customer requirements:

  • Plastic bag packaging
  • Woven bag packaging
  • Carton packaging
  • Wooden case packaging
  • Pallet packaging
  • Customer brand packaging

Product facts

Procurement & delivery information

MOQ

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MOQ from 1 kg for standard sizes. Trial orders are welcome. Custom non-standard parts are confirmed based on drawings and the production process; small-batch samples can be arranged.

Stock

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Large stock. Bolts, nuts, washers, expansion anchors, threaded rods and other common specifications are well stocked for ready shipment or fast replenishment.

Lead time

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Large stock of common specifications — ready for fast dispatch after order confirmation. Standard products usually take 15–30 days when production is needed. Custom non-standard orders have short lead times, confirmed after drawing review.

Materials

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A variety of carbon steel, stainless steel, and alloy steel materials are available, including: Q195, Q235, 35#, 45#, 35CrMo, 42CrMo, C1022, 304, 316, etc. Other specified materials can be produced according to customer drawings, standards, or technical requirements.

Grades

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Fasteners of different strength grades are available, including: 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, etc. Nuts can be provided in grades 4, 6, 8, 10, 12, etc., depending on product standards and customer requirements.

Standards

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Production can be carried out according to international and national standards, including: DIN, ISO, GB, ANSI/ASME, ASTM, BS, JIS, etc. We also support customization of non-standard fasteners based on customer drawings, samples, or technical parameters.

Surface finishes

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A variety of surface treatments are available, including: clear zinc, yellow zinc, black zinc, black oxide, hot-dip galvanizing, Dacromet, nickel plating, chrome plating, phosphating, mechanical galvanizing, etc. Salt spray time, coating thickness, and anti-corrosion requirements can be confirmed according to customer requirements.

Production equipment

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Equipped with cold heading, thread rolling, die pressing, machining, heat treatment, and surface treatment supporting equipment. We can complete the entire production process from raw materials, forming, thread processing, heat treatment to packaging and shipping, and arrange the corresponding production process according to product type.

Inspection, certificates & reports

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Products can be inspected for dimensions, threads, hardness, tensile strength, torque, coating thickness, and salt spray before production and shipment. According to order requirements, we can provide: material certificates, dimensional inspection reports, hardness test reports, tensile test reports, salt spray test reports, coating inspection reports, and third-party inspection reports. Relevant certificates and inspection items are provided according to product standards and customer requirements.

Packaging

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A variety of export packaging methods are supported, including: small boxes + outer cartons, woven bags, cartons, wooden cases, pallets, bulk packaging, and custom packaging. We can provide customer brand packaging: logo, color boxes, labels, barcodes, shipping marks, and OEM packaging. Packaging methods will be adjusted according to product weight, size, and transportation mode to reduce damage and spillage during transit.

Loading & export capability

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We have long-term experience serving overseas customers and are familiar with sea freight, air freight, and international logistics export processes. We can formulate container loading plans based on product size, weight, and container type, supporting: 20GP, 40GP, 40HQ full container export, as well as LCL consolidation. Before shipment, we can provide product photos, packaging photos, pallet photos, and container loading photos, and assist in preparing commercial invoices, packing lists, certificates of origin, and other export documents.

Projects & customer cases

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Products have been exported to markets in Asia, the Middle East, Africa, Europe, South America, and other regions, serving customers including: fastener importers, hardware wholesalers, building material distributors, engineering contractors, machinery manufacturing enterprises, and industrial equipment customers. We can provide standard fasteners, engineering fasteners, and non-standard customized product solutions according to different market requirements.

Products

Factory-direct supply with large stock on common sizes

Hebei Wangtu focuses on industrial fastener supply. We keep large stock, start standard orders from 1 kg, and run short lead times for custom parts. Send your size list or drawing for a fast RFQ.

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Bolts
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Bolts

For importers, wholesalers and project buyers sourcing standard or drawing-based bolts. Browse flange, socket, anchor, U-bolt and other bolt types. For a bulk RFQ, send the standard or drawing, size and thread, material or grade, finish, quantity, packing, destination and required inspection documents.

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Anchors Expansion Bolts Sleeve Anchors Wedge Anchors Chemical Anchors
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Anchors / Expansion Series

For importers, distributors and project buyers sourcing anchors for concrete, masonry and installation work. Browse sleeve, wedge, drop-in, heavy-duty and chemical-anchor components. For a bulk RFQ, provide the base material, application, anchor type and size, material or finish, quantity, packing, destination and any drawing or document requirement.

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Custom special-shaped fasteners, non-standard bolts, nuts, and metal connectors
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custom-fasteners

Custom non-standard fasteners and special-shaped metal parts can be manufactured according to customer drawings, samples, and technical requirements. We offer customization of bolts, nuts, screws, pins, stampings, and special connectors. Various materials, strength grades, surface treatments, dimensions, and packaging requirements are supported, suitable for machinery, automotive, construction, energy, and industrial projects.

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Hex nuts of different strength grades and industrial nut product display
04

Nuts

For importers, wholesalers and project buyers sourcing standard or drawing-based nuts and locking components. Browse hex, lock, flange, cap, coupling and other nut types. For a bulk RFQ, send the mating bolt or thread, standard or drawing, material or grade, finish, quantity, packing, destination and required inspection documents.

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News

Latest Updates

All News →
2025-01-15-cost-trade

Challenges and Opportunities: Cost, Trade, and Transformation – How Fastener Manufacturers Can Tackle Rising Raw Material Prices, Trade Barriers, and the Urgent Need for Business Model Transformation

The global fastener industry is at a critical crossroads. Despite growing demand from sectors like new energy vehicles and aerospace, manufacturers face unprecedented headwinds. However, significant opportunities await those who can navigate these challenges.

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construction-fastener-demand-2026

Infrastructure Projects and Steel Structure Expansion Drive Global Bolt Demand

Global demand for construction fasteners continues to grow in 2026. Infrastructure expansion, steel structure projects, and industrial development are driving strong demand for high-strength bolts and fastening systems.

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Global Fastener Market Trends in Q3 2026: Steel Prices, Construction Demand, and Export Opportunities

Global Fastener Market Trends in Q3 2026: Steel Prices, Construction Demand, and Export Opportunities

In Q3 2026, the global fastener industry continues to grow steadily. Demand for high-strength bolts, structural fasteners, and galvanized construction bolts has increased in infrastructure, steel structures, and industrial projects.

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Quick inquiry

Bulk RFQ / Send Drawing

Large stock on common sizes. MOQ from 1 kg. Short custom lead times. Include product/standard, size, material/grade, finish, quantity, packing and destination — or upload a drawing — and we will reply with quote and lead time.

U-Bolt