What is your MOQ (Minimum Order Quantity)?

Standard HDG Swivel Couplers have an MOQ of 1,000 pieces. Custom Marking/OEM orders have an MOQ of 5,000 pieces, which is negotiable based on design complexity. Samples are available for testing.

What is your production lead time?

Samples take 7-10 working days. Standard orders from stock take 15-20 working days. Full production or custom orders take 25-35 working days.

Do you offer customization or OEM services?

Yes, we are a leading OEM supplier. We provide custom drop forging with logos, special finishes like color powder coating, and private label packaging for boxes, bags, and pallets.

How are the couplers packaged for export?

Standard packs are bundled in sets of 25 or 50, wrapped, and packed in strong cartons or wooden boxes. Bulk/OEM orders use master cartons or 1-ton sacks, palletized and shrink-wrapped for sea freight.

Building Material Scaffolding Joint Cast Iron Scaffolding Coupler for Construction Hardware

Name: Building Material Scaffolding Joint Cast Iron Scaffolding Coupler for Construction Hardware
Brand: Weifang Shengao Machinery Co., Ltd.
SKU: 694470112

Shandong, ChinaWeifang Shengao Machinery Co., Ltd.

US$0.50-2.00

50 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Connection Type

Snap-on Connection

Finish

Galvanized

Model NO.

SA-JSJKJ

Material

Metal

Type

Scaffold Couplers

Item

Scaffolding Coupler

Application

Construction

Grade

4.8

Casting Form Usage Count

Permanent

Surface Treatment

Spray-Paint, Yes or No

Surface Roughness

Ra3.2

Machining Tolerance

+/-0.02mm

Raw Material

Iron, Carbon Steel

Service

Shengao, OEM

Export Markets

Global

OEM and ODM

100% with Drawings

Inspection

Slide Caliper, Microcaliper, Projector

After Sale Service

Reply Within 24hours

MOQ

10-1000PCS

Free Sample

Yes

Transport Package

Plywood Box

Specification

SGS

Trademark

Shengao

Origin

Weifang, Shangdong, China

HS Code

87089910

Production Capacity

5000PCS/Month

Key features

High Tensile Strength: Made from premium drop-forged carbon steel for superior impact resistance and durability.

Corrosion Resistant Finish: Hot-dip galvanized to ISO 1461/ASTM A153 standards for maximum site protection.

Precision Manufacturing: Advanced deburring and polishing ensure clean, burr-free products with no deformation.

Flexible OEM Services: Supports custom forging, logo stamping, special finishes, and private label packaging.

Strict Quality Control: ISO9001 certified with in-house and third-party inspections including ultrasonic testing.

Versatile Compatibility: Designed for standard 48.3mm tubes, with options for 42mm and 60.3mm sizes.

Fast Global Delivery: Express shipping in 3-5 days; bulk orders delivered within 30 working days.

Comprehensive Support: 24-hour reply time for inquiries and full system design support for scaffolding projects.

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: ≤2.31h 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 a Scaffolding Swivel Coupler?

A Scaffolding Swivel Coupler is a key forged steel fitting used to connect two scaffold tubes at any angle. Its unique pivoting design allows independent rotation, enabling secure, non-parallel connections for rigid three-dimensional structures.

Q:What materials are your swivel couplers made from?

We use premium Drop-Forged Carbon Steel (Grade Q235B or S235JR) for the body for superior grain structure. Bolts and nuts are Grade 8.8 High-Tensile Steel, hot-dip galvanized for maximum corrosion resistance.

Q:What scaffold tube sizes are they compatible with?

Standard couplers are designed for the global industry standard tube: 1-1/2 inch (1.5') with an Outer Diameter of 48.3mm. Other sizes like 42mm OD and 60.3mm OD are available upon request.

Q:How is it installed and tightened correctly?

Place tubes into the jaws, ensuring no gaps at the heel. Hand-tighten the bolt, then use a scaffolding spanner to reach the recommended torque of ~40-50 Nm. Avoid overtightening to prevent damage.

Q:What is the difference between a Swivel Coupler and a Double Coupler?

A Swivel Coupler connects two tubes at any angle (one fixed, one adjustable). A Double Coupler connects two tubes in parallel, end-to-end. They are complementary fittings used together in complete systems.