16mo3 15mo3 1.5415 DIN Alloy Steel Forging Welding Neck Flange
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Weld Neck Flange
Weld neck flanges are the most widely used type in process piping systems. They offer the highest level of joint integrity due to their butt-welded connection with a pipe. These flanges are ideal for high-pressure and high-temperature applications. Although they are bulkier and more expensive compared to other flange types, their reliability makes them a preferred choice in critical industrial environments.
Production Instructions
We can produce flanges according to American, German, Italian, European, and Chinese standards. We also provide custom non-standard flanges based on your drawings. Our range includes diameters from DN15 to DN3000, with pressure ratings up to 2500LBS. Flanges are manufactured from carbon steel, stainless steel, alloy steel, and duplex ferritic-austenitic steel.
Flange Standards
American Standard
ASME B16.5, ASME B16.47, ANSI B16.5, API605, AWWA C207
Japanese Standard
JIS / KS 5K / 10K / 16K / 20K / 30K
German Standard
DIN2527, 2528, 2561, 2565, 2566, 2573, 2576, 2627-2638, 2641, 2642, 2655, 2656, 2673, 86029
British Standard
BS4504 PN16 / 25 / 40, BS10 TABLE E / TABLE D
Italian Standard
UNI 2253, 2254, 2276, 2278, 2281, 6084-6093
China Standard
GB/T 13402-92, GB/T9112-9124-2000, HG5010-5028
Production Process
Equipment Exhibition
Product Show
Quality Assurance - TUV Certificate
Quality System Certificate:
We hold a Grade A Manufacturing License for Special Equipment, a Press Equipment Directive Quality-Assurance System Certificate, a China Classification Society Work Approval Certificate, and a TUV Certificate.
Perfect Inspection Process:
Raw material inspection (5 steps) – Ensures raw materials meet order requirements.
Process testing (10 steps) – Guarantees each step is qualified.
Factory testing (6 steps) – Ensures 100% product quality meets customer needs.
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