Qingdao Powerup International Trade Co.,Ltd
Qingdao Powerup International Trade Co., Ltd is supplying all kinds of steel structure / towers and high precision machined components.
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Hot-dip Galvanized Surface Treatment Transmission Tubular Steel Tower For Electricity Transmission
Transmmission tubular steel tower is one of our main products. We have advanced production technology and production equipment for transmission line steel tower of 1000kV and below, 500kV substation architecture, 220kV power transmission and transformation steel pipe pole, telecommunication tower, and substation structure. We have set up 4 angle steel iron tower processing workshops, 2 steel pipe pole processing workshop, and 1 hot dip galvanizing processing workshop.
Quick Details of our transmission tubular steel tower:
| Height | From 10M-100M or according to client’s requirement | |||||
| Suit for | Electric Power Transmission and Distribution | |||||
| Shape | Polygonal or Conical | |||||
| Material | Normally Q235B/A36,Yeild Strength≥235MPa | |||||
| Q345B/A572,Yeild Strength≥345MPa | ||||||
| As well as Hot Rolled coil from ASTM572, GR65,GR50,SS400 | ||||||
| Power Capacity | 10kV to 500kV | |||||
| Tolerance of the dimension | According to client’s requirement | |||||
| Surface treatment | Hot-dip-galvanized following ASTM123, or any other standard by client’s requirement | |||||
| Joint of Poles | Slip joint, flanged connected | |||||
| Standard | ISO9001:2008 | |||||
| Length of per section | Within 13M once forming | |||||
| Welding Standard | AWS(American Welding Society)D 1.1 | |||||
| Production Process | Raw material test-cutting-bending-welding-dimension verify-flange welding-hole drilling-sample assemble-surface clean-galvanization or power coating /painting-recalibration-packages | |||||
| Packages | Packing with plastic paper or according to client’s requirement | |||||
| Life Period | More than 25 years, it is according to installing environment | |||||
The following is the parameters of our transmission tubular steel tower:
1. Material
| Structure Steel | ||
| High Tensile Steel | Mild Steel | |
| Grade | GB1591: Q345B, Q345C,Q3455D | GB700: Q235B, Q235C,Q235D |
| EN10025: S355JR, S355J0, S355J2 | EN10025: S235JR, S235J0, S235J2 | |
| ASTM A572 Gr50 | ASTM A36 | |
| Tension strength (Mpa) | 470~630 Mpa | 360~510 Mpa |
| Yield strength (t≤16mm) (Mpa) | 355 Mpa | 235 Mpa |
| Elongation (%) | 20 | 24 |
2. Bolts&Nuts
| Grade | Grade 4.8, 6.8, 8.8 |
| Standards for mechanical properties | |
| Bolts | ISO 898-1 |
| Nuts | ISO 898-2 |
| Washers | ISO 6507-1 |
| Standards for Dimensions | |
| Bolts | DIN7990, DIN931, DIN933 |
| Nuts | ISO4032, ISO4034 |
| Washers | DIN7989, DIN127B, ISO7091 |
3. Marking
| Method of marking of the members | Hydraulic Press Stamping |
4. Welding
| Method | CO2 Shielded Arc Welding & Submerged Arc Welding(SAW) |
| Standard | AWS D1.1 |
5. Galvanizing
| Galvanization standard of steel sections | ISO 1461 or ASTM A123 |
| Galvanization standard of bolts and nuts | ISO 1461 or ASTM A153 |
6. Capacity
| Maximum Production Capacity of Steel Tower per annum | 100,000 TON per annum |
| Maximum Capacity of Galvanizing Plant per annum | 100,000 TON per annum |
7. Test
| Factory test | Tensile test,Elements analysis, Sharpy test(impact test), Cold Bending, Preece test, Hammer tes |
8. Quality control
100% inspection: Each member will be checked by our QC team to ensure all members are qualified before delivery.
9. Package
Set-wisely packing or member-wisely packing as per client's requirements.
Tower members: One steel tower is separated into several bundles.
Bolts: Packing material is robust nylon bag or steel drum.
10. Our Commitment and target
Four ZEROs---Zero Quality Defect, Zero Quantity Shortage, Zero Delivery Delay, Zero Client Complaint
The below are some of our photos for you to check:
1. Our Equipments:
2. Our produce process:
3. Our Galvanizing Pool:
4. Do Trial-assembly Before Batch Production:
5. Tubular Members after hot-dip galvanized:
7. Loading: