| pecification | OD | 21.3mm-406.4mm | |
| WT | 1.2-20mm | ||
| Length | 1-12m | ||
| Zinc coat | 200-600g/m² | 20-83μm | 0.13-2oz/ft² |
| Technique | Pre-galvanized / Hot-dipped galvanized / Hang-planting galvanization | ||
| Steel grades | Q195, Q235A-B, Q345A-E, 20#, 10#,16Mn, ASTM A36,ASTM A500,ASTM A53, ASTM 106, SS400, St37, St52, S235JR, S355TRH ect. | ||
| Standards | GB/T 3091-2001,GB/T13912-2002, BS 1387, ASTM F1083 ect. | ||
| Pipe ends | plain, beveled, threaded, socket with holes, with PVC clap/ coupling/ clamp,
or as customers’ requirement |
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| treatment | |||
| Application | liquid delivery (pump well, gas, water), construction pipe, structural
pipe(greenhouse structure, fence post), curtain wall, machinery part ect. |
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| Package | in bundle, no other package or wrapped with waterproof,
or as customers’ requirement |
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Commonly used materials for welded pipes are: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc.
Welded pipes are classified into general welded pipes, galvanized welded pipes, oxygenblowing welded pipes, wire casings, metric welded pipes, roller pipes, deep well pump pipes, automotive pipes, transformer pipes, electric welded thinwalled pipes, electric welded specialshaped pipes, scaffolding pipes and Spiral welded pipe.
Welded pipes are widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction
Used for liquid transportation: water supply and drainage.
Used for gas transportation: coal gas, steam, liquefied petroleum gas.
For structural purposes: as piling pipes, as bridges; piers, roads, building structures, etc.
