Product name：Galvanized round pipe
Grade：Q195, Q235, SGCC, SGCH, SGC340, SGC400, SGC440, SGC490 , SGC570, SGHC, SGH340, SGH400, SGH440, SGH490, SGH540, DX51D, DX52D, DX53D, DX54D, S220GD, S250GD, S280GD, S320GD, S350GD, S400GD, S500GD, S550GD, etc
Standards： ISO, JIS, ASTM, ALS NL
Thickness：1.2 ~ 12mm according to customer requirements
| Product name | Galvanized steel pipe |
| Thickness | 0.12mm-60mm or customer requirements |
| Diameter | 10-3000mm or customer requirements |
| Length | 5m-14m, 5.8m, 6m, 10m-12m, 12m or according to customer's actual requirements |
| Technology | ERW welding, hot dip galvanizing, pregalvanizing |
| Galvanized | pre-galvanized steel pipe: 30g/m2-80g/m2 Galvanized steel pipe: 200g/m2-400g/m2 |
| Surface treatment | Galvanized, oiled, unoiled, lacquered, etc. |
| Materials | 10#, 20#, 45#, 16Mn, A53(A, B), Q235, q345, Q195, Q215, St37, St42, ST37-2, St35.4, St52.4, ST35, etc. |
| Pipe ends | flat/beveled, protected by plastic covers at both ends, cut square, slotted, threaded and coupler, etc. |
| Standards | ASTM AISI JIS DNS GB, etc |
| Package | Factory standard export seaworthy packing |
| Application | 1. Fence, greenhouse, door tube, greenhouse2. Low pressure liquid, water, gas, oil, pipeline pipe3. Suitable for indoor and outdoor construction4. Widely used in scaffolding construction, low cost and convenient |
hot-dip/cold galvanized steel pipe specification
| regulation | grid | ODmm | Wall thickness mm | Minimum wall | Welded pipe( 6 m fixed length) | Galvanized pipe( 6 m fixed length) |
| Nominal inner diameter | inch |
| Thick mm | Meter weight kg | Root weight kg | Meter weight kg | Root weight kg |
| DN15 | 1/2 | 21.3 | 2.8 | 2.45 | 1.28 | 7.68 | 1.357 | 8.14 |
| DN20 | 3/4 | 26.9 | 2.8 | 2.45 | 1.66 | 9.96 | 1.76 | 10.56 |
| DN25 | 1 | 33.7 | 3.2 | 2.8 | 2.41 | 14.46 | 2.554 | 15.32 |
| DN32 | 1.25 | 42.4 | 3.5 | 3.06 | 3.36 | 20.16 | 3.56 | 21.36 |
| DN40 | 1.5 | 48.3 | 3.5 | 3.06 | 3.87 | 23.22 | 4.1 | 24.6 |
| DN50 | 2 | 60.3 | 3.8 | 3.325 | 5.29 | 31.74 | 5.607 | 33.64 |
| DN65 | 2.5 | 76.1 | 4 | 3.5 | 7.11 | 42.66 | 7.536 | 45.21 |
| DN80 | 3 | 88.9 | 4 |
| 8.38 | 50.28 | 8.88 | 53.28 |
| DN100 | 4 | 114.3 | 4 |
| 10.88 | 65.28 | 11.53 | 69.18 |
| DN125 | 5 | 140 | 4.5 |
| 15.04 | 90.24 | 15.942 | 98.65 |
| DN150 | 6 | 168.3 | 4.5 |
| 18.18 | 109.08 | 19.27 | 115.62 |
| DN200 | 8 | 219.1 | 6 (welded pipe) |
| 31.53 | 189.18 |
|
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| DN200 | 8 | 219.1 | 6.5 hot-dip galvanizing |
|
|
| 36.12 | 216.72 |
GB / T 3091-2001 hot-dip galvanized pipe wall thickness deviation
| nameWeigh | Chinese standard | Enterprise standard | Contrast conclusion |
| Low pressure fluid conveying welded steel pipe | Welded steel pipe |
| GB/T3091-2001 | Q/YF01-2002 |
| 1 | Steel pipe outer diameter | Steel pipe outer diameter,outer diameter allowable deviation | Better than Chinese standards |
| Outer diameter D/mm | Tube outer diameter deviation mm | Tube outer diameterDeviation mm | Outer diameter D | 8″ | ± 0.60mm |
| D< 48.3 | ± 0.5mm |
| 5″-6″ | ± 0.50mm |
| 48.3 | ± 1.0% |
| 4″ | ± 0.40mm |
| 168.3 | ± 0.75% | +2.4 -0.8 | 3″-“ | ± 0.30mm |
| D>508 | ± 1.0% | +3.0 -0.8 | 2″ or less | ± 0.20mm |
| Wall thickness deviation | ± 12.5% | Wall thickness S | 1.85.75mm | 5% |
| 2 | Usual length | Allowable deviation | length | Usual length | Allowable deviation | Better than Chinese standards |
| 4M-12M | +20 -0 | 2 inches or less | 5-0 |
| Double length: 5-10mn ® should beleft for each double in the usual lengthMargin | +20 -0 | 2.5 inches – 4 inches | 5-0 |
| 5 inches or more | 15-0 |
| Special length | 20-0 |