Can you provide samples for testing?

Yes, sample photos are available and customization from samples is supported.

What is the annual production capacity?

The annual production capacity for reinforcement steel profiles is between 3600 and 5000 tons.

Custom Steel Profile for UPVC Window and Door

Name: Superb Galvanized C /U/Custom Steel Profile for UPVC Window and Door
Brand: Tianjin Longlong Metal Products Factory
SKU: 1988149475

Tianjin, ChinaTianjin Longlong Metal Products Factory

US$1,000.00-1,300.00

5 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Connection Form

No Connection

Size

Per Frequest

Model NO.

LL-SP-046

Thickness

1.0mm/1.2mm/1.5mm/2.0mm/2.5mm

Type

Light Section Steel

Standard

GB, ASTM

Trademark

Low-alloy High-tensile Structural Steel

Member

Steel Column

Type of Steel For Building Structure

Low Temperature Resistant Steel

Residential Wall Structure

Wall Stud

Application

Steel Workshop, Frame Part, Window and Door

Forming

Cold Bending

Carbon Structural Steel

Per Frequest

Transport Package

Bundle

Specification

U type, C type and square pipe

Trademark

LONGLONG

Origin

Tianjin China

HS Code

72169100

Production Capacity

300tons/Month

Key features

Customized Dimensions: Size and thickness are fully customizable to meet specific project requirements.

OEM and ODM Services: Full customization available from samples or designs with flexible customization options.

Anti-Corrosion Protection: Surface treated with zinc layers (Z120-Z275) to prevent rust and extend service life.

Enhanced Safety Features: Steel lining increases connection strength, earthquake resistance, and wind resistance.

Sound Insulation: High-quality steel lining provides good sealing and effective sound insulation.

Eco-Friendly Material: Uses lightweight energy-saving standard steel to reduce carbon emissions.

ISO Certified Quality: Manufacturing certified under ISO 9001:2015 and TS16949 standards.

Global Export Experience: Over 28 years of experience exporting to more than 80 countries worldwide.

Company profile

High Repeat Buyers ChoiceStandardized quality controlR&D CapabilitiesCustomization from Designs

Tianjin Longlong Metal Products Factory

Tianjin, China

CertifiedBusiness 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: 21 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤15h

AI-Powered supplier vetting

SummaryThe supplier is a Tianjin, China-based manufacturer with capabilities in forming machines, press machines, punching machines, solar panel brackets, greenhouse steel structures, light steel villas, and construction materials. It holds an ISO 9001:2015 certificate and reports documented procedures for supplier approval updates, corrective and preventive actions, and customer complaint handling. Production resources include two production lines, 6–10 quality-control staff, and stated annual capacities for several product categories. The supplier supports OEM, ODM, and multiple forms of customization, but reports no new products in the past year and no SDK availability. Overseas service infrastructure is limited: it has no overseas warehouse, showroom, agent, or branch, and the stated overseas-service country count is zero. Customer-related evidence includes OEM service for recognized brands and sales or service presence in several countries, but no specific customer names or project outcomes are provided.

Supplier typeThe supplier presents itself as a manufacturing company producing steel structures, construction materials, solar panel brackets, and forming-related machinery. Its stated OEM and ODM services, factory location, production lines, and product capacities support classification as a manufacturer rather than only a trading or service intermediary.

CertificationsThe supplier explicitly reports holding an ISO 9001:2015 certificate, indicating documented quality-management-system certification. No additional certifications are identified in the provided information.

After-Sales capabilityThe supplier has documented procedures and records for corrective and preventive actions and customer complaint handling, and accepts FOB, CIF, CFR, and EXW quotation terms. However, it reports no overseas warehouse, showroom, agent, or branch, and the overseas-service country count is stated as zero, limiting evidence of localized overseas support.

Production capacityThe supplier operates two production lines, employs 6–10 quality-control staff, and reports annual capacities of 20,000 tons for solar panel brackets, 200,000 square meters for greenhouse steel structures, 100 roll-forming machines, and 100,000 square meters for light steel villas. These stated facilities and capacities explicitly demonstrate production capability across several product categories.

Customization capabilityThe supplier explicitly supports customization from samples, customer designs, full customization, minor customization, and flexible customization, and also offers ODM services. This provides direct evidence of broad customization capability for its products.