What certifications do your products hold?

Our products hold TUV, CE, and ISO certificates, along with UL/FM/NSF, DVGW, BSI, and many other international certifications.

What is the warranty period for these fittings?

We provide a 5-year warranty with quality assurance for all our malleable iron pipe clamp fittings.

Round Steel Sleeve Joint for Greenhouse

Name: Round Steel Sleeve Joint for Greenhouse
Brand: Qingdao Hulk Metal Technology Co., Ltd.
SKU: 1913820265

Shandong, ChinaQingdao Hulk Metal Technology Co., Ltd.

US$1.05-3.35

500 Pieces

Sample price:US$1.05/piece.Request sample

Product profile

Customization

Available

After-sales Service

Quality Assurance

Warranty

5 Years, Quality Assurance

Model NO.

Material

Malleable Iron, Metal

Type

Fixed

Structural Style

Kee Clamp

Framework

Combined Scaffolding

Supporting Mode

Floor Type Scaffolding

Lapping Form

Single Row Scaffolding

Erection Position

External Scaffolding

Move Method

Attached Lifting Scaffolding

Scaffolding Part Type

Kee Clamp

Construction Properties

Installation Scaffold

Connection

Press Connection

Shape

Equal

Head Code

Round

Angle

45 Degree

Technics

Casting

Color

Silver

Wall Thickness

No Standard

Certification

TUV, ISO, CE

Screw Material

Stainless Steel

Tensile Strength

≥350MPa

Elongation

≥10%

Hardness

Hb≤150

Size Available

T-E(21.3-60.3mm)

Standard Surface

Hot-DIP Galvanized

Application

Handrail and Railing

Transport Package

Cartons Then Plywood Pallet

Specification

Cast Iron

Trademark

HM & OEM

Origin

Shandong, China (Mainland)

Production Capacity

10000 PCS/Month

Key features

Corrosion Resistant Surface: Hot-dip galvanized surface treatment meets ASTM A153 for anti-rusting and corrosion protection.

Extensive Certification: Holds TUV, CE, ISO certificates plus UL/FM/NSF, DVGW, BSI, and other international standards.

Wide Size Compatibility: Available in six sizes covering T-E range from 21.3mm to 60.3mm for various pipe diameters.

Easy Installation Design: Designed for easy use without specialized tradesmen, welding, or hot work permits required.

5-Year Warranty Coverage: Comprehensive 5-year warranty with quality assurance for all mechanical pipe clamp fittings.

Versatile Application: Suitable for indoor/outdoor use, handrails, scaffolding, plumbing, and industrial systems.

Customizable Options: Customizable connection, shape, head code, angle, and surface treatment to meet specific needs.

Company profile

High Repeat Buyers ChoiceOEM ServicesManagement CertificationProduct Certification

Qingdao Hulk Metal Technology Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2002-11-01Nearest Port: Qingdao, Shanghai, NningboAverage Response Time: ≤3.74hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier offering 3D software design, ODM, OEM, and multiple customization options. It has five R&D engineers, launched new products during the past year, and provides aluminum die-casting parts. Certifications include ISO9001:2015, ISO45001:2018, ISO14001, and CE. Documented corrective-action and customer-complaint procedures are in place, while quality assurance status and raw-material traceability remain unknown. The supplier reports in-stock capability but lacks overseas warehouses, showrooms, agents or branches, and offline trade-show participation. Its company description states coverage of more than 100 countries and regions, but the overseas-service field separately records zero countries, creating an inconsistency. No financial figures are assessed. Customer evidence includes reported cooperation with many companies globally, but no Fortune 500 cooperation is stated.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and describes itself as serving companies across more than 100 countries and regions. It also states that it can use customer information, samples, and drawings to meet special requirements, supporting its role as a technical and solution-oriented manufacturer.

CertificationsThe supplier holds ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications, and has CE product-compliance certification. These are explicit certifications supporting quality, occupational safety, environmental management, and product compliance.

After-Sales capabilityThe company description explicitly refers to perfect after-sales service. It also has documented corrective and preventive action and customer-complaint procedures with followed records, although the overall quality-assurance status is unknown.

R&D capabilityThe supplier has five R&D engineers, launched new products during the past year, provides 3D software design, and offers ODM services. However, it explicitly has no available SDK, which limits the evidence for broader technical-integration capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, flexible customization, 3D software design, and ODM services. Its request for customer samples and drawings further supports the stated ability to handle customized requirements.

Product Q&A

Q:How can I get your prices of kee clamp?

Please provide your detail inquiry list which including items, surface requirement and estimated order quantity. Then detail quotation will be provided.

Q:Can I have a sample before business start?

Yes, we welcome sample order to test and check our quality. Usually samples are free and you just need to pay the courier cost by FedEx or DHL.

Q:What's about the lead time of order?

Sample order usually need 5-7 days after order confirmation. Mass production order usually need 30-40 days after prepayment received.

Q:What material is used for the pipe clamps?

The pipe clamps are made of malleable iron in accordance with ASTM A197, ensuring good mechanical strength and elongation.

Q:What surface treatments are available?

We provide three kinds of standard surface treatments: Raw Rough Black, Hot-dip Galvanized, and Electro Galvanized (Double Coating).