Which standards does the product comply with?

The product complies with ISO 3821 and ISO 9001:2008 standards.

ISO 3821 Oxygen Acetylene Rubber Twin Welding Hose

Name: ISO 3821 Oxygen Acetylene Rubber Twin Welding Hose
Brand: Qingdao Grantseed Rubber Co., Ltd.
SKU: 2080064872

Shandong, ChinaQingdao Grantseed Rubber Co., Ltd.

US$0.09

100 Meters

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Natural Rubber

Capability

for Conveying Welding Gases

Model NO.

Twin Welding Hose

Color

Working Pressure

20 Bar 300 Psi

Bursting Pressure

60 Bar 900 Psi

Safety

3:1

Tube

EPDM/SBR Blended,Black and Smooth

Cover

EPDM/SBR Blended,Blue,Red,Green,Smooth Weather

Reinforcement

Textile Braided High Tensile Synthetic Yarn

Length

20m,30m,40m,50m,100m

Temperature

-40 C- 90c

Branding

Extrim Blast PRO

Size

1/4"-3/8"

Transport Package

Colorful Nylon Tape,Transparent PVC Tape,Pallets,

Specification

6mm-10mm

Trademark

GRANDFLEX

Origin

Qingdao

HS Code

40093100

Production Capacity

6000000m/Year

Key features

ISO 3821 Compliance: Meets ISO 3821 standards for oxygen acetylene rubber twin welding hoses.

High Bursting Pressure: Bursting pressure reaches 60 Bar (900 Psi) for maximum safety.

Durable Material: Constructed with imported natural rubber and EPDM/SBR blended tube and cover.

Multiple Length Options: Available in 20m, 30m, 40m, 50m, and 100m lengths.

Strong Reinforcement: Features high tensile synthetic yarn braiding for durability.

OEM Service Available: Offers OEM service for well-known brands and commercial companies.

Global Market Reach: Exported to over 68 countries including Europe, North America, and Asia.

Company profile

Importers and ExportersQA/QC InspectorsRaw Materials ReportsR&D Capabilities

Qingdao Grantseed Rubber Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2024-12-25Nearest Port: Qindao, Tianjin, ShanghaiAverage Response Time: ≤15hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DDP, FCA

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company with a broad product scope covering rubber, plastic, hydraulic, chemical, sealing, metal, machinery, electronic, and hardware products. It reports export activity to more than 68 countries and an export-sales share of 51%–70%, with self-operated import/export rights and two years of export experience. However, it lacks stated overseas warehouses, showrooms, agents or branches, and has no reported offline trade-show participation. R&D indicators are weak: no new products in the past year, no ODM, OEM for popular brands, or SDK availability. Production-related information is mixed because the supplier is classified as a trading company, while its description cites equipment, production lines, and 100% pre-shipment inspection. Quality and service governance are under-documented, with no written records for inspection, corrective actions, complaint handling, or quality assurance, and no ERP, OA, CRM, or SAP integration. Financial credibility cannot be assessed...

Supplier typeThe supplier is explicitly classified as a trading company. Its stated business scope covers a broad range of industrial and general products, including rubber, plastic, hydraulic components, chemicals, seals, metal products, machinery, electronics, and hardware.

After-Sales capabilityThe supplier has no in-stock service capacity, overseas warehouse, overseas showroom, overseas agent or branch, or reported overseas service countries. It also has no written procedures or records for corrective and preventive actions or customer complaint handling, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier reports no new products in the past year, no ODM service, no OEM for popular brands, and no available SDK. It also reports no ERP integration and zero use of OA, CRM, and SAP systems, providing no evidence of strong digitalized innovation management.

Customization capabilityThe supplier explicitly offers customization from designs, supporting design-based customization. However, it does not provide ODM services, so the evidence supports customization execution but not broader product-development capability.

Client casesThe supplier states that its market covers more than 68 countries and that exports account for 51%–70% of total sales, with two years of export experience and self-operated import/export rights. These are market-reach indicators, but no named customer cases or verifiable project references are provided.