Q345B ASTM 572 GR65 Hot Dip Galvanized Dead Angle Steel Pole 132KV
Product Description
The products above are steel utility poles made specifically for power distribution between 10KV to 550KV.
Particular care and additional safe-working precautions shall be taken during erection works in the vicinity of live lines and/or at places where the line runs parallel to other power lines which may be energized. Supervision at site by a competent and experienced supervisor who has the necessary competency and experience to the approval of DES is a requirement. A certified copy of the supervisor's Certificate of Competency issued by an authoritative institution acceptable to DES shall be submitted for verification by the Engineer. The operation of or connections to any items of equipment once made live shall be subjected to DES Safety Regulations which require work permits to be issued by an Authorised person before any work can be carried out. 1.10 QUALITY ASSURANCE AND QUALITY CONTROL (OA/OC) 1.10.1 General As a means of assuring that the performance of the works fulfils the requirements of the Contract, the Contractor shall establish and implement an approved Quality Assurance and Quality Control (QA/QC) program. A Quality Manual shall be submitted by the Contractor to DES for approval before commencement of site work.
Product Description
| ITEM | STANDARD | minimum YIELD STRESS Fy (Mpa) |
minimum TENSILE STRESS Fu (Mpa) | OBSERVATION t = thickness |
| Poles shaft and base plate and arms | EN 10.025 S355 J0 * | 355 345 335 325 | 470-630 470-630 470-630 470-630 | t = 16 16 < t = 40 40 < t = 63 63 < t = 80 |
| Anchor bolts | Cl 6-8 ISO 898 | 480 | 600 |
(*) In accordance with NF A 35.503, Class 1 Chemical composition product analysis of Class 1 :
| Si | = | 0.030 | % |
| Si + 2.5 P | = | 0.090 | % |
Mechanical characteristics and chemical composition of sheet steels shall be confirmed by Mill Test Certificates; these certificates shall comply to § 3.1 .B of EN 10204 / ISO 10474.
3. Manufacturing:
Sections of poles are made from sheets of steel, cut to trapezes, then cold formed to shape the twelve- sided regular polygonal cross section.
Formed plate shall be bent to a radius sufficiently large so as not to produce cracking of the material.
3.1. Welding
The manufacturer shall be responsible for determining and for developing proper techniques to be used in the welding operations.
All welding shall be performed by welders, welding operators and tackers qualified for the type of welding to be performed. Qualifications shall be in accordance with EN1090 or AWS D1. 1.
All welding shall be performed in accordance with EN1090 EXC2 and EN1090 EXC3 for shaft to base flange, including procedure qualification.
Welding shall be done by the shield metal-arc, gas shielded flux core, gas shield metal-arc or submerged-arc processes.
3.1.1. Longitudinal Welds
Longitudinal welds will have sixty (60 %) per cent penetration minimum except in slip joint area of female section where the penetration shall be 100%.
3.1.2. Shaft to Base Plate Welds (if relevant)
Shaft to flange plate welds shall be one hundred percent (100 %) penetration welds for base plate if shaft’s thickness is equal or over 6mm.
If shaft’s thickness is less than 6mm, shaft to base plate welds will be fillet welds.
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