| After-sales Service: | Reasonable Returns or Exchanges Are Supported |
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| Warranty: | 12 Month Warranty |
| Type: | Seamless |
| Technique: | Cold Drawn |
| Material: | Carbon Steel |
| Surface Treatment: | Black/Varnishing/Polished/Antiseptical/Oiled...... |
| Samples: |
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| Customization: |
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ERW(Electric Resistance Welding), LSAW(Longitudinally Submerged Arc Welding), EFW(Electric Fusion Welding) and HFW(High frequency welding) are several main welding techniques of Jiangsu HYT International. Welded steel tubes series are the other main product of HYT.
| Type | Welded Square / Rectangular Steel Tubes | |||||
| Technique | ERW, LSAW, EFW, HFW | |||||
| Shape | Square, Rectangular | |||||
| Size Range | Outer Diameter (OD) | Square | 20*20*1.0mm~1000*1000*50mm | |||
| Rectangular | 20*30*1.0mm~ 800*1200*50mm | |||||
| Tolerance | Side Length | ≤30mm ±0.15~±0.25mm >30-50mm ±0.3~±0.4mm >50-70mm ±0.7%~±0.8% >70mm ±0.8%~±1% |
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| Wall Thickness (WT) | ≤1mm ±0.12~±0.18mm >1-3mm +12.5%/-10% >3mm ±10% or +12.5%/-10% |
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| Convexity or Concavity | ≤30mm 0.1~0.2mm >30~50mm 0.15~0.3mm >50~75mm 0.5%~0.8% >75mm 0.6%~0.9% |
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| Radius of Corners | ≤6mm ≤2.0S(times) 6mm S>10mm ≤3.0S(times) |
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| Twist | Normal | ≤4 mm/m | ||||
| High Grade | ≤2 mm/m | |||||
| Total Twist | Normal | ≤0.4% | ||||
| High Grade | ≤0.2% | |||||
| Length | 2000mm, 2500mm, 3000mm, 5800mm, 6000mm,12000mm, etc. (or as customers' demands) | |||||
| Standard | EN DIN BS GOST ASTM ASME | |||||
| Grades | Stainless Steel | 200 Series | 201, 202, 204, 205, 216... | |||
| 300 Series | 301, 302, 303, 304, 304L, 309, 309S, 310, 310s, 316, 316L, 316Ti, 317L, 321, 347, 347H... | |||||
| 400 Series | 409, 409L, 410, 410S, 420, 430, 431, 434, 439, 440, 441, 444... | |||||
| Duplex Series | UNS S22053, S22253, S31500, S31803, S32205, S32304, S32900... | |||||
| Carbon Steel | ASTM A53 Gr. A/ Gr. B; ASTM A106 Gr. A/ Gr. B/ Gr. C; ASTM A192; ASTM A333 Gr. 1/2/3/4/5/6; API 5L Gr. A/ B, X42, X46, X52, X56, X60, X65, X70, X80; AISI 1010/1018/1020/1035/1040/1045 ... |
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| Alloy Steel | A335 P1/P2/P5/P9/P11/P12/P22/P23/P36/P91/P92 A213 T2/T5/T9/T11/T12/T22/T23/T36/T91/T92 AISI 2515/3310/3415/4130/4140/4340/5115/5120/5140/6150/8620/9255/9840 ... |
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| Tip: The above standard and grades are just for reference. We can also produce customized products according to your requests. | ||||||
| Inspection | Mandatory testing: (a) cast / chemical analysis (b) tensile test, (c) dimensional inspection, (d) visual inspection of the tubes surface. Optional testing: (a) flattening test or drift expanding test, (b) roughness measurement NDT to find longitudinal defects, (c) eddy current, (d) stray flux, (e) ultrasound. |
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| Ends | The tubes with deburred ends or ends customized for welding. | |||||
| The ends are vertical to the longitudinal axis and are without burrs. | ||||||
| Application | It is widely used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. | |||||
| Non-standard custom production and processing is always a core business of Jiangsu HYT International. With tube details that you offer, such as size, shape, outer diameter, etc. or a detailed drawing, we can produce tubes exactly as you want. | ||||||
1) Are you manufacturer or trading company?
We are integration of manufacturer and trading.
2) Where is your factory?
We are a group, in order to meet different demands from our customers, we had developed many subsidiary corporations in Shandong, Tianjin, Hebei,Jiangsu and Shanghai.
3) What's the delivery time?
If we have inventory, it is 3-7 days. Generally speaking, it's around 15 days from the date of receiving payment.
If there any more question, please feel free to contact the sales without any hesitate.
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