380KV Catenary Single circuit H frame Steel structure
 

this photo refers to our 380KV Catenary single Circuit H frame structure, it is single circuit pole structure. on the tope of H pole, it is OPGW or OHGW and every phase consist four split conductors with Double insulators.  Due to longer basic Span, these conductors seem catenary between two poles. 

 
since 2004 MEGATRO being to produce and design every type of steel poles and lattice Towers for overseas client in utility electricity, telecom and other application.

these 380KV Catenary Single circuit H frame structures can be manufactured as one large piece, or as several small pieces which fit together. this type of pole often used in City power transmission grid, with little space, economic and lower cost. Now MEGATRO can produce distribution pole with some type as follow:
(1) Flange connection
(2) Slip joint
(3) Step type
(4) Stagger type
(5) Others 
 
 MEGATRO Can optimize design, to set a compact, narrow base, the tower design not only Advanced but practical, with an emphasis on economic rationality to ensure safe and reliable operation. Today, with over 10 years of experience and our Commitment to excellence, MEGATRO remains an industry leader in the manufacture and design of steel tubular & monopole structures for all Highway, Municipal, Custom, telecom, lighting and electric Utility applications. MEGATRO Has a complete staff of professional engineering personnel trained in the PLS Pole program and three different manufacturing processes for producing steel Towers, poles and other supports. We utilize the latest versions of PLS-CADD, PLS-POLE, TOWER, AutoCAD and other CAD software. 
the structure shall be designed according to Load combinations given as per IEC 61936-1 and as illustrated below:

Normal Loads

1 Dead weight load

2 Tension load

3 Erection load

4 Wind load

Exceptional Loads

1 Switching forces

2 Short-circuit forces

3 Loss of conductor tension

4 Earthquake forces

MEGATRO is one of the few manufactures who assemble a face of 380KV Catenary single circuit H Frame structure and lattice towers. this attention to quality may not be the Cheapest process but it does insure every tower meets our high standards of Quality. And it helps to reduce on-site construction cost due to mismatched Assemblies. MEGATRO 380KV Catenary single circuit H frame structure can Accommodate a variety of cross-arm and other accessories. after fabrication all 380KV Catenary single circuit H frame structures  are delivered to the Galvanizing facility to be Hot DIP Galvanized. Towers are processed through the Facility by Caustic Cleaning, Pickling, and then Fluxing. these strict Procedures insure years of maintenance free towers. Even we take secondary Finish for client again, which as duplex surface treatment.   
Other information:
Availability size: Based on the customer's requirements.
Material: Chinese material or as per clients requirement
Package: both parties discuss before delivery
Port of Loading: Qingdao Port
Lead Time: One month or based on the customer's needs
Minimum order: 1 set
Fabrication standard: Chinese Standard or other standard which client accepted
Steel grades
POLE SHAFT: Chinese steel Q345B, which same to ASTM A572 GR50
Other webs, bracing and not stress plate and angle steel: Chinese Q235B, which Same to ASTM A36
Plates: Chinese steel Q345B, which same to ASTM A572 GR50
Bolts: Chinese grade 6.8 and 8.8, which similar to ASTM A394
A) Dimension and tolerance for angle are according to GB/T1591-1994, similar to EN 10056-1/2
B) Hot dip galvanization in accordance with GB/T 13912-2002, which similar to ASTM A 123
C) the welding will be performance in accordance with AWS D1.1 or CWB standard
If any special requirement, we can design and discuss with client.