wenzhoushi chengyu steel co.,ltd
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Overview
Quick Details
Standard:JIS,AISI,ASTM,GB,DIN,EN,GOST
Type:Precision Stainless Steel Tubing
Grade:201/304/304L/304LN/304H/316Ti/316L/316H/321/321H/904L/310S/347 etc
Size:OD6mm-60mm WT0.5mm-5mm
Thickness Tolerance:-/+0.01.5%
Application:Petroleum,Chemical Engineering,Fluid machinery,Irrigation Works,Electric Power,Environmental,Etc
Surface Finish:Brush polish,Hairline,160grit,Mirror,Bright,Etc
Technique:Cold rolling Cold drawing
Test:Hardness Test,Hydrostatic Test,Ultrasonic Test,Eddy Current Test,Dimensional Checking,Chemical Analysis Etc
Stainless Steel Pipe Knowledge:
First, the material performance is superior
Because the precision stainless steel tube contains Cr, Ni, Ti and other elements.Cr element can significantly improve the strength, hardness, wear resistance, oxidation resistance and corrosion resistance of stainless steel, especially in industrial application;Nickel element can improve the strength of stainless steel tube, maintain the toughness of stainless steel, acid and alkali has high corrosion resistance, acid and alkali environment on the human respiratory tract, skin, eyes will have different degrees of influence, so the role of nickel element is very important;Titanium ensures the compactness of stainless steel tubes and avoids intergranular corrosion.
Second, the production process is rigorous
1. Calendering and annealing: heat the workpiece to a predetermined temperature, and heat treat the cooled metal after holding for a period of time.This step is to prevent the workpiece deformation, cracking, convenient workpiece cutting processing.
2, slitting: the stainless steel plate volume, cut into the corresponding width, so as to carry out the next step of deep processing and pipe making.When dividing, we should pay attention to the scraping of the slitting knife on the plate.
3, welding: the use of argon arc welding and plasma welding, argon arc welding shield gas is pure argon gas, mainly welding the stainless steel pipe below 3mm, plasma welding has a strong penetration, mainly welding 5-8mm stainless steel pipe.
4, shaping: stainless steel welded pipe process is called extrusion production, all the square tube and rectangular tube, are originally from the round tube, through the production of the same circumference of the tube and then extruded into the corresponding square tube and rectangular tube, and finally with mold shaping and straightening.
5, cutting: stainless steel tube for cutting process is relatively rough, most of them are cut with grinding wheel, after cutting will produce cloak, need to be further trimmed;The other one is band saw cutting, which has relatively good accuracy. There is also cape heat treatment. For pipes with special purposes, it is necessary to carry out bright heat treatment, so that the ductility of pipes can reach a higher level.
6, polishing: the use of mechanical polishing method, by cutting, plastic deformation of the surface of the material to remove the polished convex and get a smooth surface.
7. Inspection: inspection, mainly check whether the outer diameter and thickness of the pipe are up to the standard, whether the surface treatment is up to the standard, and whether the welding process is up to the standard.
Third, economic and environmental protection
Due to the continuous progress of precision stainless steel pipe manufacturing technology, the manufacturing cost is getting lower and lower, and the price is relatively lower and lower.The service life of stainless steel is longer than that of copper, aluminum and other materials, and it is recyclable, practical and environmentally friendly.If wood is used as raw material, wood is generally expensive, the manufacturing process is complex, forest resources are destroyed, not environmental protection;If it is aluminum as a raw material, the hardness of aluminum is low and the impact is easy to deform;Copper is relatively expensive.
| AMERICAN STANDARD CONTRAST FORM | |||||||||
| Nominal diameter in inches | External diameter in millimeters | ANSI B36.19 | |||||||
| 5s | 10s | Sched 40s | Sched 80s | ||||||
| mm | kg/m | mm | kg/m | mm | kg/m | mm | kg/m | ||
| 1/8" | 10.29 | 1.24 | 0.281 | 1.73 | 0.371 | 2.41 | 0.467 | ||
| 1/4" | 13.72 | 1.65 | 0.499 | 2.24 | 0.644 | 3.02 | 0.809 | ||
| 3/8" | 17.15 | 1.65 | 0.64 | 2.31 | 0.858 | 3.2 | 1.118 | ||
| 1/2" | 21.34 | 1.65 | 0.814 | 2.11 | 1.016 | 2.77 | 1.26 | 3.73 | 1.62 |
| 3/4" | 26.67 | 1.65 | 1.034 | 2.11 | 1.298 | 2.87 | 1.68 | 3.91 | 2.19 |
| 1" | 33.4 | 1.65 | 1.312 | 2.77 | 2.125 | 3.38 | 2.5 | 4.55 | 3.23 |
| 11/4" | 42.16 | 1.65 | 1.674 | 2.77 | 2.732 | 3.56 | 3.38 | 4.85 | 4.46 |
| 11/2" | 48.26 | 1.65 | 1.926 | 2.77 | 3.155 | 3.68 | 4.05 | 5.08 | 5.4 |
| 2" | 60.33 | 1.65 | 2.424 | 2.77 | 3.992 | 3.91 | 5.43 | 5.54 | 7.47 |
| 21/2" | 73.03 | 2.11 | 3.747 | 3.05 | 5.345 | 5.16 | 8.62 | 7.01 | 11.4 |
| 3" | 88.9 | 2.11 | 4.585 | 3.05 | 6.557 | 5.49 | 11.28 | 7.62 | 15.25 |
| 31/2" | 101.6 | 2.11 | 5.272 | 3.05 | 7.526 | 5.74 | 13.56 | 8.18 | 18.62 |
| 4" | 114.3 | 2.11 | 5.945 | 3.05 | 8.496 | 6.02 | 16.06 | 8.56 | 22.29 |
| 5" | 141.3 | 2.77 | 9.639 | 3.4 | 11.74 | 6.55 | 21.76 | 9.52 | 30.92 |
| 6" | 168.3 | 2.77 | 11.514 | 3.4 | 14.037 | 7.11 | 28.23 | 10.97 | 42.52 |
| 8" | 219.08 | 2.77 | 15.049 | 3.76 | 20.334 | 8.18 | 42.49 | 12.7 | 64.57 |
| 10" | 273.05 | 3.4 | 23.028 | 4.19 | 28.29 | 9.27 | 60.24 | 12.7 | 81.46 |
| 12" | 323.85 | 3.96 | 31.806 | 4.57 | 36.633 | 9.52 | 73.76 | 12.7 | 97.36 |
Q1: Wonder if you accept small orders?
A1: Do not worry. Feel free to contact us. In order to get more orders and give our clients more convener ,we accept small order.
Q2: Can you send products to my country?
A2: Sure, we can. If you do not have your own ship forwarder, we can help you.
Q3: Can you do OEM for me?
A3: We accept all OEM orders,just contact us and give me your design.we will offer you a reasonable price and make samples for you ASAP.
Q4: What's your payment terms ?
A4: By T/T,LC AT SIGHT,30% deposit in advance, balance 70% before shipment.
Q5: How long is your production lead time?
A5:It depends on product and order qty. Normally, it takes us 15 days for an order with MOQ qty.
Q6: When can I get the quotation ?
A6: We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.