Product Description
Hot-dip galvanized pipes are made by reacting molten metal with a ferrous substrate to create an alloy layer that combines both the substrate and the coating. Hot-dip galvanizing is carried out first by pickling the steel pipe, and in order to remove the iron oxide from the surface of the pipe, the pickling is followed by cleaning in an aqueous solution of ammonium chloride or zinc chloride or a mixture of ammonium chloride and zinc chloride in an aqueous solution tank, which is then fed into the hot-dip galvanizing tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. Hot-dip galvanized steel strip is mainly used in the building materials industry, packaging industry, metal mesh, steel springboards, etc.
| Material Grade | Q195,SS330,ST37,ST42,Q235,SS400,S235JR,Q345,S355JR, SS500,ST52,SGCC,SGCH,G550,DX51D,DX52D,DX53D,S280GD,S350GD |
| Standard | GB,JIS,ASTM,BS,DIN,... |
| Surface | Electric galvanizing, Hot galvanizing |
| Technique | Arc welding, resistance welding (high frequency, low frequency), gas welding , furnace welding |
| OD | Round Pipe: 10mm-406.4mm; Square Pipe: 10mm*10mm~500mm*500mm; Rectangular Pipe :10mm*20mm~400mm*600mm |
| Length | 1-12m or as customers' requirement |
| Wall Thickness | 0.3mm-30mm |
| Application | general engineering structure to cars, Bridges, ships, boilers ,pressure vessels and other manufacturing… |
| Trade Terms | EXW,FOB,CIF CFR |
| Loading Port | Shanghai port, Tianjin port, Qindao port |
| Payment terms | 1)30 % T/T deposit in advance and balance 70% before delivery. |
| 2) 30% deposit by T/T, the balance by L/C at sight. | |
| 3) 100% L/C at sight. | |
| MOQ | 5Tons |
| Packing Detail | Standard export package or customized requirements are accepted |
| Delivery time | 1.Usually,within10-20days after receiving deposit or LC. 2.According to the order quantity |
| Samples | Free samples are provided but the freight is borne by the buyer |
Pre galvanized steel pipe:| Outer Diameter | Wall Thickness | Length | |
| Inch | mm | mm | meter |
1/2" | 20mm | 0.8mm-2.0mm | 0.3m-12m |
3/4" | 25mm | 0.8mm-2.0mm | 0.3m-12m |
1" | 32mm | 0.8mm-2.0mm | 0.3m-12m |
1-1/4" | 40mm | 0.8mm-2.0mm | 0.3m-12m |
1-1/2" | 47mm | 1.0mm-2.5mm | 0.3m-12m |
2" | 60mm | 1.0mm-2.5mm | 0.3m-12m |
2-1/2" | 75mm | 1.0mm-2.5mm | 0.3m-12m |
3" | 88mm | 1.0mm-2.5mm | 0.3m-12m |
4" | 113mm | 1.0mm-2.5mm | 0.3m-12m |
5" | 140mm | 1.0mm-2.5mm | 0.3m-12m |
6" | 165mm | 1.0mm-2.5mm | 0.3m-12m |
Hot dip galvanized steel pipe:
| Outer Diameter | Wall Thickness | Length | |
| Inch | mm | mm | meter |
| 1/2" | 21.3mm | 0.6mm-3.0mm | 0.3m-12m |
| 3/4" | 26.9mm | 0.6mm-3.0mm | 0.3m-12m |
| 1" | 33.4mm | 1.0mm-3.0mm | 0.3m-12m |
1-1/4" | 42.3mm | 1.0mm-4.0mm | 0.3m-12m |
1-1/2" | 48.3mm | 1.0mm-4.0mm | 0.3m-12m |
2" | 60.3mm | 1.5mm-4.0mm | 0.3m-12m |
2-1/2" | 76.1mm | 1.5mm-4.0mm | 0.3m-12m |
3" | 88.9mm | 1.5mm-9.5mm | 0.3m-12m |
4" | 114.3mm | 2.0mm-9.5mm | 0.3m-12m |
5" | 141.3mm | 3.0mm-9.5mm | 0.3m-12m |
6" | 168.3mm | 3.0mm-12.0mm | 1.0m-12m |
8" | 219.1mm | 3.2mm-12.0mm | 1.0m-12m |
10" | 273mm | 3.2mm-12.0mm | 1.0m-12m |
12" | 323.8mm | 6.0mm-15.0mm | 1.0m-12m |
14" | 355.6mm | 8.0mm-15.0mm | 1.0m-12m |
16" | 406.4mm | 8.0mm-20.0mm | 1.0m-12m |
Square and Rectangular Steel Pipe size chart | ||
Square Hollow Section | Rectangular Hollow Section | Thickness |
20*20 25*25 30*30 | 20*40 30*40 | 1.2-3.0 |
40*40 50*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
60*60 | 50*70 40*80 | 1.2-5.75 |
70*70 80*80 75*75 90*90 100*100 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
120*120 140*140 150*150 | 160*80 100*150 140*80 100*180 200*100 | 2.5-10.0 |
160*160 180*180 200*200 | 200*150 250*150 | 3.5-12.0 |
250*250 300*300 400*200 350*350 350*300 | 250*200 300*200 350*200 350*250 450*250 400*300 500*200 | 4.5-15.75 |
400*400 280*280 450*300 450*200 | 400*350 400*250 500*250 500*300 400*600 | 5.0-20.0 |
Galvanized steel pipes have a wide range of uses. In addition to being used as pipelines for low-pressure fluids such as water, gas, and oil, it is also used in the petroleum industry, especially oil well pipelines, oil pipes and petroleum heaters in offshore oil fields, and used in chemical coking equipment. Condensation cooler, coal distillation wash oil exchanger pipeline, as well as mine pipe piles, mine tunnel support frame pipelines,Urban/civilian construction pipes, mechanical structure pipes, agricultural equipment pipes, water and gas pipes, greenhouse pipes, scaffolding pipes, building materials pipes, furniture pipes, low pressure fluid pipes, oil pipes, etc. Also, galvanized steel pipes are widely used in construction, machinery, coal mining, chemical industry, electric power, railway vehicles, automobile industry, roads, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, exploration machinery, greenhouse construction and other manufacturing industries.
1. OD 219mm and below In hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles
2. above OD 219mm in bulk or according to custom opinion
3. 25 tons/container and 5 tons/size for a trial order;
4. For 20" container the max length is 5.8m;
5. For 40" container the max length is 11.8m.
