What materials and standards are used for these pipe fittings?

The fittings are made of malleable or ductile iron, meeting ASTM A197 and ASTM A153 standards, with tensile strength >=350MPa and elongation >=10%.

What surface treatments are available?

Available surface treatments include black finish and hot-dip galvanized (HDG), with HDG providing a maintenance time of 30-50 years.

What are the installation advantages of these clamps?

Installation requires no welding, so no hot permits are needed. It is cost-effective and only requires low-skilled workers.

201 Guard Hook Double-Layer Galvanized Malleable Cast Iron Key Clamp Pipe Fitting

Name: 201 Guard Hook Double-Layer Galvanized Malleable Cast Iron Key Clamp Pipe Fitting
Brand: Qingdao Hulk Metal Technology Co., Ltd.
SKU: 2224238345

Shandong, ChinaQingdao Hulk Metal Technology Co., Ltd.

US$0.50

1,000 Pieces

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Standard

ASTM A197;ASTM A153

Material

Malleable Iron/Ductile Iron

Connection

Male/Female

Surface Treatment

Black,Hot DIP Galv, Double ,Coating

Cert

TUV, ISO, CE

Technic

Casting

Screw Material

Stainless Steel

Standard Surface

Black,Hot DIP Galv, Double ,Coating

Surface Maintain Time

30-50 Year for HDG

Tensile Strength

>= 350MPa

Elongation

>= 10%

Hardness

Hb<=150

Application

Safety Guardrails

Installation Advantage 1

No Welding, So No Hot Permits Required

Installation Advantage 2

Cost Effective, Only Low Skilled Workers Required

Transport Package

Put in Box Then on Pallet

Specification

T-E(21.3-60.3mm)

Trademark

HULK&OEM

Origin

China

Production Capacity

500000/Month

Key features

High-Strength Material: Made of malleable iron meeting ASTM A197 with tensile strength >=350MPa and elongation >=10%.

Corrosion Resistance: Hot-dip galvanized surface treatment meets ASTM A153, ensuring anti-rust and corrosion protection.

Easy Installation: No welding required, eliminating the need for hot work permits and reducing labor costs.

Wide Application: Suitable for guardrails, handrails, playgrounds, agriculture, and industrial structural fittings.

Quality Assurance: Comprehensive quality control including sample testing, production tracking, and pre-shipment inspection.

Certified Standards: Products certified by TUV, ISO, and CE, ensuring compliance with international standards.

Long Durability: Hot-dip galvanized coating provides a surface maintenance time of 30-50 years.

Custom Manufacturing: OEM/ODM services available with casting techniques and stainless steel screw options.

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: ≤2.95hTerms 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:Are you a trading company or a factory?

HULK Metal is a comprehensive enterprise with its own factory and partner factories of the same standard, providing a complete supply chain and comprehensive services.

Q:How can I track my production progress without visiting?

We provide regular feedback on production progress, pictures, and videos at any time. You can also view the real status of order production through video calls.

Q:What if I am not satisfied with the received parts?

For small parts, we offer pre-production samples for testing and take responsibility for quality issues. For large parts, we recommend purchasing a single piece for trial before continuing the order.

Q:How do you ensure the quality of my parts?

We provide sample delivery for testing, track production with a quality inspection team, conduct pre-shipment inspections, and offer quality assurance services to resolve any issues.

Q:Do you offer discounts for large quantity orders?

Yes, we provide profits to every customer who sincerely cooperates. You can send drawings, requirements, and quantities for a suitable production solution and better quotation.