News - ZHEJIAGN ZHIJU PIPELINE INDUSTRY
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  • 30/06/2026

 HOW TO MATCH REDUCER SIZE WITH PUMP OUTLET PIPELINE CALIBER IN CHEMICAL INDUSTRY

Improper reducer size matching causes chemical pump turbulence, cavitation and high power consumption. This complete guide shares professional caliber matching rules, material selection standards, dim...

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  • 30/06/2026

 COMMON SURFACE DEFECT CAUSES & FIXES OF FORGED STEEL FLANGES

Forged steel flange surface defects like pits, scratches and microcracks cause pipeline leakage and corrosion. This guide analyzes material & production root causes, provides graded repair solutio...

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  • 29/05/2026

 SELECTION PRINCIPLES OF TEE FITTINGS FOR LOW-TEMPERATURE PIPING PROJECTS

Standard pipe tees are prone to brittle fracture and leakage under sub-zero and cryogenic working conditions. This article explains systematic selection principles for low-temperature tee fittings, co...

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  • 29/05/2026

 HIGH PRESSURE PIPELINE SELECTION CRITERIA FOR CARBON STEEL CROSS FITTINGS

Improper selection of carbon steel cross fittings easily causes leakage, deformation and safety hazards in high-pressure pipelines. This article covers standardized pressure grades, qualified carbon s...

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  • 29/05/2026

 DIFFERENT TYPES OF PIPE CAP AND THEIR FUNCTIONAL ADVANTAGES

Various pipe caps feature different connection modes, pressure resistance and sealing performance. This article classifies mainstream pipe cap types, analyzes functional strengths of butt weld caps, s...

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  • 29/05/2026

 DIFFERENCE BETWEEN WELDED AND SEAMLESS STAINLESS STEEL PIPE ELBOWS

Welded and seamless stainless steel elbows differ greatly in production process, pressure tolerance and corrosion resistance. This article makes a full comparison of their pros, common sizes, applicab...

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