Origin	China
Model Number	WX301
Brand Name	Wuxiao

Qingdao Wuxiao Wind turbine tower is the tower units for wind power turbine, which is applied with wind power Generator during wind power generation. It is the large diameter & thick steel pipe structure below the generator of a wind turbine that supports the turbine, houses the meters and wires, and keeps the turbine high above the ground level to protect the surrounding area and people from the force of the blades. It is also the main stressed components which need to be enough strength and rigidity to endure huge wind pressure and shearing forces. The base also serves to elevate the turbine above surrounding obstacles that could otherwise block the wind. The tower units are formulated to a large tube with a variety of accessories which include platforms, ladders, cable fixings, positioning of switchboard and so on. Our Wuxiao Group manufactures them with high quality materials and sophisticated technology. We also completely remove rust of the tower unit surface and paint them good enough to withstand coastal salt fog climate and erosion and extend useful life.
Place of Origin: Qingdao, Shandong, China
Brand Name: Wind turbine tower (Wind Tower, Wind tower for turbine)
Model No: Based on the customer? requirements.
Ref No.: WX-301
Availability size: Based on the customer? requirements.(O.D.; Thickness, length or other parameters)

Fabrication: Based on the customer's requirements, local conditions, and other technical data agreed by both parties.
Color: White or Based on the customer? requirements.
Terms of Payment: L/C, T/T
Port of Loading: Qingdao Port
Delivery Lead Time: one month or based on the customer? needs
Design Requirements:
The design will be also based on the customers?specific requirements.
Minimum Order Quantity? 20 sets
Performance Standard
The materials and fabrication of tower units shall conform to the following standards.
Material: It is in accordance with the customer? requirement for material selection. All the steel materials are used the noted Chinese steel plant products or produce them according to our Chinese national standard. And relevant national codes and standards shall be introduced as guidance.
(Chinese Standards):
Material Substitution
No Description Material Remark
1 Tower unit steel Q345D Yield strength 355Mpa
2 Man Hole Frame Q345D
3 Foundation Ring Q345D
4 Flange under Foundation Ring Q345E -50°C Compact test
5 Casting box Q235B
6 Forged Flange S355NL
7 Platform Q235B Anti-skid plate
8 Internal Ladder Q235B Square tube
9 Welded Accessories Q235B
1 API SPEC 5L: Pipeline Steel Pipe Specification
2 GB/T13793-92: Longitudinal-seam Electric Welding Steel Pipes
3 GB709-88: Dimensions, shape, and weight for hot-rolled plates and strips
4 JB4730-2005: Non-destructive Test Code
5 JB4708-2000: Standard for Welding:
6 Standards for Raw Material: GB/T1591-94(Low alloy high strength structural steel), GB700-88(Carbon structural steel)
7 Standard for Forged Flange: In conformity with the requirement of relevant drawings (imported form South Korea)
8 The OD, wall thickness and length shall comply with Code API SPEC 5L. In case of pipe of other dimensions are required, the buyer and the seller shall make mutual agreement accordingly.
9 Except that the tolerance for OD and wall thickness shall comply with API SPEC 5L, GB709-88 Dimensions, shape, and weight for hot-rolled plates and strips shall also be binding. In case of pipe of higher precision is required, the buyer and the seller shall make mutual agreement accordingly.
10 The tolerance for straightness and tortuosity factor shall not exceed 0.15% of the pipe length.
11 The ovality shall not exceed 5mm.And the difference of the average diameter between pipe ends shall not be more than 2mm.
12 The cutting section of two ends shall be perpendicular with the axis of the pipe, and free from blurs.
13 The transaction value is based on theoretical weight or actual weight. And the density for the steel is 7.85 ton/m3.
14 Physical properties for the pipe
Steel products and welding consumables shall be checked and tested to meet relevant standards. The welding technique can be adjusted in compliance with customer requirement, and for submerge welding; relevant national standards shall be binding.
15 Functional property
Flattening, hydraulic test, flaw test, and sampling test can be conducted according to client? requirement.
16 Visual quality
Defects like fissure, scar, overlap, layer, porosity, Flash are not allowed. Oxidization skin and traces of grinding are allowed.
17 Test methods
? For each heat of steel, random sampling and chemical analysis as well as physical property tests shall be performed. Relevant quality certificates must be sufficient.
? Flattening and hydraulic test will be performed in accordance with client? requirements.
? Dimension precision test will be performed on each pipe.
18 Packing, Labeling, and Quality Certification
?1The basic objective for packing is for the safe transportation of the pipe. And detailed packing requirement can be agreed by two parties. In general, we always painted and wrapped the tower units with plastic tensilized film
?Relevant quality certificate will be forwarded together with the delivered pipe.
Remarks: We have introduced API SPEC 5L Pipeline Steel Pipe Specification with up-level of requirements. We also can produce all the goods according to the customer? Standard.
Welded requirements:
1 We used CO2 welding and submerged arc auto welding or other methods.
2 Welded seam shall be full penetration and grinded.
3 The welded product has no fissure, scar, overlap, layer or other defects.
4 Welding quality analysis will be performed in accordance with client? requirements.
Certification:
We also supply Factory accept test, Warranty certification, Certificate of product quality
Certification of Quality Management System
Our all products are in conformity with GB/T19001-2000idt ISO9001:2000.
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