What is the lead time?

Standard Slings: 20-30 working days. Custom/Certified Orders: 35-45 working days.

Customized Heavy Duty Link Chain Black G100/G80 Alloy Steel Lifting Chains

Name: Customized Heavy Duty Link Chain Black G100/G80 Alloy Steel Lifting Chains
Brand: Weifang Shengao Machinery Co., Ltd.
SKU: 698745522

Shandong, ChinaWeifang Shengao Machinery Co., Ltd.

US$0.10-5.00

100 Pieces

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Usage

Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain

Material

Alloy

Model NO.

WF-SA

Surface Treatment

Electroplating

Feature

Fire Resistant

Chain Size

1/2"*3/32"

Structure

Welded Chain

Color

Solid Color

Item

Chain

Raw Material

Stainless Steel, Alloy Steel

Function

Lifting/Conveyor Chain

Diameter

Diameter From 6mm to 42mm

Brand Name

Shengao, OEM

Standard or Nonstandard

Nonstandard

Factory

Over 15 Years Experience in Producing

OEM

Available

Dimension

10-100mm

Certificates

SGS, ISO9001:2015

OEM Service

Yes

Custom Made

Yes

Logo Printing

Customized

MOQ

1ton

Free Sample

Yes

Transport Package

Plywood Box

Specification

SGS

Trademark

Shengao

Origin

Weifang City, Shandong Province, China

HS Code

87089910

Production Capacity

50000PCS/Month

Key features

High-Performance Alloy Steel: Manufactured from heat-treated alloy steel for superior lifting performance and abrasion resistance.

Multiple Grade Options: Available in Grade 80 and Grade 100, offering high strength-to-weight ratios for overhead lifting.

Customizable Dimensions: Diameter adjustable from 6mm to 42mm, with length and width of chain links fully customizable.

Comprehensive Surface Treatments: Options include black tempered, electro galvanized, hot dip galvanized, and painted finishes.

OEM and Custom Services: Full OEM service available with custom tooling design, logo printing, and tailor-made packaging.

Wide Standard Compliance: Manufactured to EN818-2, ISO3077, JIS, US federal, and ASME B30.9 standards.

Fast Response Support: Inquiries are replied to within 12 hours with professional engineering assistance available.

Free Sample Availability: Free samples provided for first orders, with customer covering freight costs.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Weifang Shengao Machinery Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2010-04-06 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.43h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryWeifang Shengao Machinery Co., Ltd. is a limited company focused on mechanical parts, hardware, metal tools, CNC machine tools, and related components. It identifies as a professional technical supplier and offers 3D software design and broad customization services, including sample-, design-, full-, minor-, and flexible customization. The supplier has written procedures and records for service assessment, corrective actions, and complaint handling. Its export sales share is stated at 71%–90%, with three years of export experience. However, the supplier has nine employees, only two years of total R&D engineer experience, no new products in the past year, no ODM, SDK, or overseas service infrastructure, and no stated customer cases. Audit information is provided for a TUV Rheinland audit with a validity period from September 4, 2025 to September 3, 2026, but the evaluation result is recorded as 0 and no certification name is specified.

Supplier typeThe supplier explicitly identifies as a professional technical supplier and a limited company. Its stated business and product scope covers mechanical parts, hardware products, metal tools, CNC machine tools, functional components, forgings, and powder metallurgy products; the audit record identifies mechanical parts as the primary product.

After-Sales capabilityThe supplier has clear written procedures and followed records for corrective and preventive actions and for handling customer complaints. This directly supports an established service-response process, although the slices do not provide service performance results or response-time data.

Production capacityThe supplier reports an annual production output range, six to ten quality-control staff, on-time delivery, random production quality inspection, and its own factory. It has nine total employees, so the available evidence supports an operating production capability, while capacity beyond the stated output range cannot be determined.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization, and also welcomes OEM and ODM requests according to its company description. These repeated statements provide direct evidence of broad customization coverage, although the separate record states that ODM is not available, creating a conflict on ODM specifically.

Product Q&A

Q:What is the difference between Grade 80, Grade 100, and Grade 30/43 (Proof Coil)?

This is the most critical distinction for safety and performance: Grade 30/43 (Proof Coil): General purpose, NOT for overhead lifting. Used for tie-downs, towing, logging. Grade 80 (Alloy): Standard for overhead lifting. Heat-treated alloy steel. Marked with '80' on each link. Grade 100 (Alloy): High-performance lifting chain. Stronger than Grade 80, allowing a smaller diameter chain to lift the same load, making it lighter and more flexible. Marked with '100'. We manufacture and recommend Grade

Q:How is the Working Load Limit (WLL) determined?

The Working Load Limit (WLL) is the maximum load the chain assembly is certified to lift in a straight, in-line pull. It is calculated as: WLL = Minimum Breaking Force (MBF) / Safety Factor For Grade 80, the standard safety factor is 4:1. For Grade 100, the standard safety factor is 4:1 (or 5:1 depending on regional standards). The WLL is derated based on the sling angle. We provide comprehensive load charts.

Q:How do I request a quote?

For a precise quote, please provide: Chain Grade (80 or 100) and Diameter. Sling Configuration (Single leg, 2-leg, etc.) and Length. Required WLL or load details. Type of end fittings (hooks, master links, etc.). Any required certifications.

Q:How should lifting chains be inspected and maintained?

Daily inspection is mandatory for safety: Visual Inspection: Look for wear, nicks, gouges, stretch, corrosion, or deformed links. Gauge Inspection: Use a go/no-go gauge to check for link elongation. If the gauge drops into a stretched link, the chain must be removed from service. Cleaning & Lubrication: Clean off debris and apply a light coat of oil to prevent corrosion. Record Keeping: Maintain an inspection log for each sling.

Q:What is your MOQ (Minimum Order Quantity)?

Standard Chain Slings (from catalog): MOQ 50 pieces. Bulk Chain by the Meter: MOQ 1,000 meters. Custom OEM Assemblies: MOQ 100 pieces (negotiable).