What standards do the bolts comply with?

The bolts comply with ASME, IFI, DIN, and ISO standards.

What is the warranty period?

We provide 10 years of after-sales service.

Structural Heavy Hex Bolts with Black Finish

Name: Structural Heavy Hex Bolts with Black Finish
Brand: LIAOCHENG HUAJIAN STEEL CO., LTD.
SKU: 1930422322

Shandong, ChinaLIAOCHENG HUAJIAN STEEL CO., LTD.

US$499.00-599.00

10 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

10year

Finish

Black Finish, Zinc Plated, Hot DIP Galvanized

Model NO.

M12*80

Application

Machinery, Chemical Industry, Environmental, Build

Size

M2-M100

Length

5-300mm

MOQ

1000sets

Delivery Time

Fast Delivery,Within 10 Days

Transport Package

Bulk in Carton Box+ Wooden Box

Specification

M22*80

Trademark

HJ steel

Origin

Hebei, China

HS Code

725

Production Capacity

8000tons Per Year

Key features

Wide Size Range: Available in sizes M2-M100 and lengths 5-300mm for diverse applications.

Multiple Finish Options: Customizable finishes including Black Finish, Zinc Plated, and Hot DIP Galvanized.

Fast Delivery: Quick delivery within 10 days for standard orders.

Strict Quality Control: Equipped with spectrometer, tensile tester, and salt spray device for rigorous testing.

Custom Packaging: Packed in wooden boxes or customized according to special customer demands.

OEM/ODM Support: Full customization from samples, designs, and flexible minor adjustments available.

Versatile Applications: Suitable for structural steel, oil & gas, wind energy, and mechanical machinery.

Standard Compliance: Manufactured to ASME, IFI, DIN, and ISO standards for reliability.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceExhibition Experience

LIAOCHENG HUAJIAN STEEL CO., LTD.

Shandong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 12 years CertifiedNearest Port: Qingdao Port, Tianjing PortAverage Response Time: ≤10.61h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier with broad customization, 3D software design, ODM, OEM, and recent new-product development capabilities. It reports substantial steel plate and H-beam output, inventory capability, overseas warehouse services, overseas agents or branches, and direct import-export rights. Export activity represents 90% of total sales, with Europe and North America listed as primary markets and 12 years of export experience. Service procedures exist for corrective and preventive actions and complaint handling, with follow-up records. Financial records are referenced for 2021–2023, but their actual results are not provided. Certification, manufacturing-contract status, environmental compliance, fire-drill status, and formal supplier-service assessment procedures remain insufficiently documented.

Supplier typeThe supplier is explicitly described as a professional technical supplier, with steel plate and H-beam production, direct import-export rights, and Europe and North America identified as primary export markets. Its export share is stated as 90%, and it has 12 years of export experience, indicating a technically oriented and internationally active manufacturing supplier.

After-Sales capabilityThe supplier has clear procedures and follow-up records for corrective and preventive actions and customer complaints. It also reports inventory capability, overseas warehouse services, overseas agents or branches, and participation in the 2023 MTM offline trade show; however, there is no overseas showroom and the number of countries served overseas is recorded as 0.

R&D capabilityThe supplier provides 3D software design services, supports multiple forms of customization, reported new products within the past year, and offers ODM services. It has no available SDK, which limits the evidence for software-development integration capability but does not negate its documented product and design innovation capabilities.

Production capacityThe supplier reports annual production information of 50,000 tons of steel plate and 50,000 tons of H-beam, 21–30 quality-control staff, in-stock capability, and lead times within 15 working days in both peak and off-seasons. A valid manufacturing-capacity contract is unknown, so contractual validation is incomplete, but the stated operating capabilities support a positive assessment.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization, together with 3D software design, ODM, and OEM services for well-known brands. This combination demonstrates broad documented customization coverage.

Client casesThe supplier reports OEM services for well-known brands and participation in the 2023 MTM offline trade show. These are relevant customer or market-experience indicators, but no customer names, project details, order outcomes, or verifiable case descriptions are supplied.