Wuxi Wilke Metal Materials Co., Ltd.
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4 Inch 75mm 400mm Diameter ASTM A53 Schedule 40 Black Hot Rolled Galvanized Pipe Steel Ms Pipe
Carbon Steel Pipe Wholesale MS Carbon Seamless Galvanized Black Steel Pipe And Tube
Hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer,
so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first.
In order to remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in the tank of ammonium chloride
or zinc chloride aqueous solution or mixed aqueous solution of ammonium chloride and zinc chloride,
and then sent to the in the hot dip bath. Hot-dip galvanizing has the advantages of uniform coating,
strong adhesion and long service life.
The hot-dip galvanized steel pipe substrate undergoes complex physical and chemical reactions with the molten plating solution
to form a corrosion-resistant zinc-iron alloy layer with a compact structure.
The alloy layer is integrated with the pure zinc layer and the steel pipe substrate, so it has strong corrosion resistance.
Product Description :
| Product Name | Galvanized Steel Pipe/Tube |
| Thickness | 0.1mm-300mm or as required |
| Standard | AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc. |
| Technique | Cold rolled |
| Surface Treatment | Clean, blasting and painting according to customer requirement |
| Thickness tolerance | ±0.15mm |
| Material | Q345,Q345A,Q345B,Q345C,Q345D,Q345E,Q235B HC340LA,HC380LA,HC420LA B340LA,B410LA 15CRMO,12Cr1MoV,20CR,40CR,65MN A709GR50 |
| Coatings | Top Coats :5 micron primer + 20 micron colour Back Coat: 5 micron primer - 7 micron primer |
| MOQ | 1tons.We also can accept sample order. |
| Shipment time | Within 15-20 workdays after receiving deposit or L/C |
| Export packing | Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required |
Dimension Tolerance :
| Processing Way | Cylinder Barrel ID (mm) | Max Length (mtr) | Straightness (mm/mtr) | ID Tolerance | Wall Thickness Tolerance (mm) | ID Roughness (μm) |
| Cold Drawn | 40-320 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.6 |
| Cold Rolled | 12-100 | 12 | 0.2-0.5 | H8-H10 | ±5% | 0.8-1.2 |
| Cold Drawn+Honed | 40-500 | 8 | 0.2-0.3 | H7-H9 | ±5% | 0.2-0.8 |
| Cold Drawn-SRB | 40-400 | 7 | 0.2-0.3 | H8-H9 | ± 5% | 0.2-0.4 |
| Deepth Drilling-Honed | 320-1100 | 8 | 0.2-0.3 | H7-H9 | ±8% | 0.2-0.8 |
| Deepth Drilling-SRB | 320-600 | 7 | 0.2-0.3 | H8-H9 | ±8% | 0.2-0.4 |
Standard and Optional Testing :
1. Visual and dimensional test 100%.
2. Eddy current test 100% acc. to EN 10246-3.
3. Ultrasonic test 100% acc. to EN 10246-7.
4. Chemical composition.
5. Impact test.
Main Features :
1. Roughness(Ra) can be 0.08µm or less.
2. Ovality can be 0.01 mm or less.
3, Hardness can be HV4° or higher.
Product Application:
1. Fence, greenhouse, door pipe,greenhouse
2. Low pressure liquid, water, gas, oil, line pipe
3. For both indoor and outdoor the building construction
4. Widely used in scaffolding construction which is much cheaper and convenient
FAQ:
Q1. What are your company's main products ?
A1: Our main products are Carbon Steel, Stainless Steel, Galvanized Steel Sheet, Coil, Tube, Bar, Profile etc.
Q2. How do you control quality ?
A2: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS,Alibaba Verified.
Q3. What are the advantages of your company ?
A3: We specialise in steel business for years,so we have mature production technology,stable capacit,more competitive price,
we dedicated to strict quality control and thoughtful customer service
Q4. Can you provide sample ?
A4: We can provide the samll samples in stock for free, as long as you contact us.
Q5:What is your delivery time?
A5: For stocks, we could transport the goods to loading port within 7 days after we received your deposit
For production period, it usually takes about 15 days-30 days after receiving the deposit.
Q6: Can we visit your factory?
A6: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.