Donghuan iron fittings are produced under ISO9001 system with CE, CRN and TSE certificates. Raw materials, dimensions and procedures are strictly controlled to meet global fluid transmission standards.
Every product undergoes 100% air tightness and pressure test. Salt spray and mechanical tests are sampled. All test records are traceable to avoid leakage and dimensional errors.
Precision smelting and automated machining remove burrs. Unified galvanizing processes guarantee stable strength, sealing and interchangeability for consistent mass production quality.
Adopt annealed malleable iron or ductile iron with anti-rust plating, matched original NBR gaskets. Precise standard threads ensure tight sealing to cut gas loss and extend service life.
Tool-free quick lock design fits most US & EU pneumatic tools. Sizes from 1/8" to 2", diverse ends suit factory, construction and irrigation scenarios.
Full in-house production with strict multi-item testing, low defective rate. Support OEM branding, small trials & bulk orders with one-stop pipe fitting supply.
When choosing hose couplings, prioritize three core factors from Shijiazhuang Donghuan Malleable Iron Technology Co., ltd. First, confirm working medium and pressure; our annealed malleable iron or ductile iron connectors with NBR gaskets fit air, water and mild oil up to 10 Bar without leakage. Second, match thread standards (NPT/BSPT/DIN) and sizes 1/8''–2'' to your hoses and pneumatic tools, claw or push-in types for fast assembly. Third, select surface finishes for environments: zinc plating for outdoor anti-rust, plus OEM customization and strict factory QC for long-term industrial use.
Providing high quality and comprehensive service. Welcome to contact us and get a quick response.
