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What's really inside your flange? At Fulihua, every batch undergoes full Metallographic Analysis — 6 steps from grinding to digital imaging — verifying grain structure, phase distribution and internal quality before any flange ships. Contact us at sales@flhmetal.com

How do engineers know a flange won't fail under sudden impact? The Charpy Impact Test measures exactly this — a calibrated pendulum strikes a notched specimen, and the absorbed energy in joules reveals the material's true toughness. At Fulihua, we test every batch 3 times and average the results for fully traceable, reliable data. Every flange. Every batch. Verified before shipment.

See how Fulihua verifies chemical composition on every flange batch — PMI testing process from surface grinding to spectrometer analysis. Material traceability guaranteed on every order. ASME · EN standards.

A complete guide to flange types under ASME B16.5 standard — Weld Neck, Slip-On, Blind, Threaded, Socket Weld and Lap Joint. Learn the differences, applications, and how to choose the right flange for your pipeline project. Manufactured by Fulihua Pipeline Equipment.

Watch how every Fulihua flange is drilled to perfection. CNC drilling process from loading to inspection — skilled operators, high-speed machining, zero shortcuts. 100 CNC machines, 20,000 tons/year. ASME · EN · JIS · GB/HG & more standards. DN15–DN1500.

Fulihua Pipeline Equipment is a professional forged flange manufacturer based in Shandong, China. With 100 CNC lathes and 2 forging lines, we produce 20,000 tons of flanges annually. Products comply with ASME B16.5 & B16.47, EN 1092-1, GOST 33259 and GB/HG standards. DN15–DN1500, Class 150–2500. Fast delivery, 12-hour response.

The furnace lights up before sunrise. At Fulihua, a steel billet glows red — and gloved hands get to work. No fanfare. Just focus, skill, and quiet pride. To every colleague on our floor: thank you. Your dedication shows in every dimension, every sealing face, every finish that leaves this facility. Craftsmanship passed down. Standards held high. Every flange, a promise we made together.

Tensile testing is one of the most critical quality control steps in flange manufacturing. Learn what a tensile test measures, why it matters for pressure pipeline applications, and how Fulihua verifies every batch of material in our own in-house laboratory before shipment.

Flange surface machining When you bolt a flange onto a pipeline, you are trusting a piece of metal to hold pressure, resist corrosion, and maintain a leak-free seal — sometimes at thousands of PSI, in extreme temperatures, for decades. But how exactly is that flange made? Here is a step-by-step look at the manufacturing process behind a precision pipe flange. Step 1: Raw Material Selection and Cutting Every flange begins as a certified steel billet or plate. At Fulihua, we so

ASME, EN— which pipe flange standard is right for your project? This guide explains the key differences in pressure ratings, dimensions, and global applications to help you specify correctly.