Can I customize the bolts?

Yes, OEM and ODM services are available. Customization can be done from samples or designs.

What is the minimum order quantity?

The minimum order quantity is 1 pc.

What are the main applications for these high-strength bolts?

They are widely used in large ball mills (up to 12-meter diameter), cement mills, coal mills, and mine mills.

Basic Customization ASTM A325/A490heavy Hex Structural Bolt

Name: Basic Customization ASTM A325/A490heavy Hex Structural Bolt
Brand: Wuxi Eternal Bliss Alloy Casting & Forging Co., Ltd.
SKU: 2051412365

Jiangsu, ChinaWuxi Eternal Bliss Alloy Casting & Forging Co., Ltd.

US$1.80-2.50

20 Sets

Sample price:US$2.50/set.Request sample

Product profile

Customization

Available

Material

40cr

Type

Round Head

Model NO.

Head Style

Round

Standard

ANSI

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Transport Package

Plywood Case

Specification

M30 x 175mm

Trademark

Origin

China

Production Capacity

500000pieces/Year

Key features

High Strength Grades: Available in 12.9, 10.9, 8.8, 6.8, and 4.8 quality levels for diverse applications.

Wide Size Range: Sizes from M20 to M45, with specifications up to M48 x 1080mm.

Industrial Application: Suitable for large ball mills, cement mills, coal mills, and mine mills.

Heat Treated Quality: Properly heat-treated to achieve superior mechanical properties.

Complete Bolt Units: Includes rubber ring, concave washer, spring washer, and nut.

OEM/ODM Service: Customization available from samples and designs.

Fast Delivery: 5-10 days for in-stock items; 45 days for custom orders.

Flexible Payment: Options include T/T, LC at sight, with terms for orders under/over $1000.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExperienced Team

Wuxi Eternal Bliss Alloy Casting & Forging Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 10 Years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.42h

AI-Powered supplier vetting

SummaryEB China is an industrial equipment and materials supplier involved in petroleum drilling and production equipment, metallurgical equipment, special steel, non-ferrous alloys, new-material technology, and installation services. Its stated manufacturing scope includes castings, forgings, machinery, and e-bike products, with substantial annual capacity figures. The supplier reports ISO9001, ISO14001, and ISO45001 certifications for its factories. It has documented procedures for corrective and preventive actions, complaint handling, supplier-service assessment, and approved-supplier updates. However, quality traceability, quality-assurance status, and testing-equipment quantity are either unknown or reported as zero. R&D resources are limited to one engineer, with no new products reported in the previous year and no available SDK, although ODM, OEM, sample-based, and design-based customization are offered. Overseas service infrastructure and offline trade-show participation are absent. Customer-facing...

Supplier typeThe supplier operates across industrial equipment, specialized metals, foundry, forging, machinery, and e-bike manufacturing activities. Its stated scope also includes new-material R&D and installation services, indicating a manufacturer and industrial solution provider rather than a purely trading company.

CertificationsThe company states that its e-bike assembly factory, foundry and forging plant, and machinery plant have passed ISO9001, ISO14001, and ISO45001 management-system certification. The slices do not provide certificate numbers, validity dates, or issuing-body details.

After-Sales capabilityThe supplier has documented corrective/preventive-action and customer-complaint procedures with followed records, plus written procedures and records for assessing service capability. However, it has no overseas showroom, overseas agent or branch, or offline trade-show participation, so international service coverage is limited despite formal process evidence.

R&D capabilityInnovation resources appear limited: the supplier reports one R&D engineer, no new products in the previous year, and no available SDK. It does provide ODM and OEM services and undertakes customization, but the evidence does not demonstrate strong ongoing product innovation.

Production capacityThe supplier reports annual output capacities of 100,000 tons for castings, 30,000 tons for forgings, and up to 1,000,000 sets for machinery and E-V products, supported by 21–30 quality-control staff. However, the stated quantity and size of quality-control test equipment is zero, creating a clear production-quality control deficiency.

Customization capabilityThe supplier explicitly offers customization from samples, graphic or design inputs, and general customization, alongside ODM and OEM services for popular brands. These statements directly support capability for both customer-specified and original-design manufacturing.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a factory.

Q:How long is your delivery time?

Generally 5-10 days if goods are in stock. If not in stock, it is 45 days, depending on quantity.

Q:What are your terms of payment?

For payments <=1000USD, 100% in advance. For payments >=1000USD, 50% T/T in advance, balance before shipment. Irrevocable LC at sight is also accepted.

Q:What material grade is used for these bolts?

The material grade is 40Cr, with chemical composition including C 0.37-0.44%, Si 0.17-0.37%, Mn 0.5-0.8%, and Cr 0.8-1.0%.

Q:What are the available bolt head shapes?

Available shapes include Oval head, Square head, Ellipse head, and Round Head.