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Ningbo New-era steel Tube Co.,Ltd.
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Product (231)
- Automobile Application Tube (12)
- Precision Steel Tubes (72)
- Boiler Steel Tubes (27)
- Structural Steel Tubes (16)
- Oil and Gas Pipes (5)
- Welded Steel Tube (1)
- Hollow bars (6)
- Wireline Drill Rods (5)
- Cold Rolling Pilger (22)
- Steel Tube Accessories (22)
- Cold Rolling Machine (20)
- cold pilger mill (7)
- Titanium and Titanium Alloy (14)
- Others (2)
Offers (10)
Standard Download (20)
News (14)
Exhibition (14)
Manufacture Equipments (9)
Testing Equipments (8)
Certificates (6)
Credit Report
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Company Info
Ningbo New-era steel Tube Co.,Ltd. [China (Mainland)]
Business Type:Manufacturer, Trading Company, Agent, Distributor/Wholesaler
City: Ningbo
Province/State: Zhejiang
Country/Region: China (Mainland)
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Standard Download
Table 1: Dimensions of artificial groove
Table 2: Diameter of artificial openingDimensions and type of pipe's manufacturing | Dimensions of artificial groove, mm |
Hot-deformed and hot-pressed pipes of all diameters | Depth h=(10± 1,0)% 8< 2 length l=(25±2,5) width m < 1,5 |
Cold-drawn and warm-worked pipes by assortment of hot-deformed (D= 114-273 mm and S= 5-25 mm ) pipes | Depth h=(7±0,7)% 8; length l=(25±2,5) width m < 1,5 |
Cold-drawn and warm-worked, hot-deformed and hot-pressed reduced by assortment of cal-drawn and warm-worked (D= 25-57 mm and S= 2,5-8 mm) pipes with ratio D/S > 5 | Depth h=(0,2±0,02) length l=(25±2,5) width m < 1,5 |
Cold-drawn and warm-worked, hot-deformed and hot-pressed reduced by assortment of cal-drawn and warm-worked (D= 25-57 mm и S = 2,5-8 mm) труб с отношением D/S < 5 | Depth h=(0,6±0,06) length l=(25±2,5) width m < 1,5 |
Diameter of pipes | Diameter of artificial opening, <1 mm |
Up to 12 mm inclusive | 1,0 ±0,1 |
Higher than 12 to 32 mm inclusive | 1,4-±0,1 |
Higher than 32 up to 50 mm | 1,8 ±0,1 |
From 50 to127 mm inclusive | 2,2 ±0,1 |
Higher than 127 mm | 2,7 ±0,1 |
