Low Alloy High Strength Structural Steel Electricity Transmission
Towers
1. Production decription
Steel Grades
Main legs: Chinese steel Q355B, which same to ASTM A572 GR50
Other members , bracing and not stress plate and angle steel:
Chinese Q235B, which same to ASTM A36
Plates: Chinese steel Q355B, 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
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
| Packing | Our product will be packed into several bundles whose weight is 2~3
MT or according to your requirement. |
Hot dip galvanizing | Standard | Steel thickness/mm | Mean coating thickness/μm | Metallic Element | Content |
Pole shafts,cross arms&bolted on accessories | ASTM A123/ A123M-15 AS/ NZS 4680 |
>6 | 85 | Mn | 0.25%-0.40% |
|
| <3-6 | 70 |
| 1.5-3 | 55 | Cu | <0.15% |
|
| <1.5 | 55 |
| Bolts,nuts&washers | GB/T 5267.3-2008 | _____ | ≥ 54 | P | <0.025% |
|
| (ISO 10684-2004) |
| Foundation bolts | ASTM A153/ A153M-09 | _____ | ≥ 54 | S | <0.03% |
Certificate
Type test
2. Product capacity
We have 5 auto production line for electric angle steel towers
Manufacturing,We can supply 3000 tons angle steel tower
every month .Else we have enogh site for installing more production
line if needed.
We also have plasma cutting machine ,14m bending machine and auto
welding machines for pole towers .
3. Technical support
Our engineer and drawer has lots of designing ,lofting experience
of lattice steel towers .
Which we can supply a overall solution of all the towers .
| Service you can get from our engineer | tower design,tower lofting ,tower weight calculation and loading
plans |
| Software they used | TTA,STWXP,TMA,LMA,Daoheng |
4. Quality control
We have very strict quality control in every steel towers .
Material incoming control:chemical and physical test
Zinc coating thinkness inspection
5. Trial assembly
We usually has two ways of trial assembly for lattice steel towers
: trial assembly before galvanzation
and after galvanization.
6. Hot dip galvanization and painting
7. Package and delivery
Package we usually do as our clients requirment .Usually for angle
steel towers,We use steel wire to make it into bundle and use
special material to protect the Zinc.
8. Company introduction
Qingdao Liangta Steel Structure Co., Ltd. ,established in year
2009,is a leading professional manufacturer in the field of
transmission steel towers (the voltage up to 1000kv),
telecommunication towers, monopoles, substation structures and
rooftop towers. We also supply steel profile products as per
customers 'requirement.
The factory located in Jiaozhou bay of Qingdao, covered an area of
over 60,000 square meters with an annual production capacity 40,000
tons.
Location:
Less than one hour drive from Qingdao International Airport, 1 hour
drive from Qingdao sea port.
• Qualification Certificates:
• -Environmental Management System Certificate: ISO14001:2015
• -Quality Management Systems Certificate: ISO9001:2015
• -Established Occupational Health and Safety Management Systems
Certificate: OHSAS 18001:2007
We also have many experiences of foreign projects, like
Philippines, Myanmar, Iraq, Mauritania and so on.
Welcome to contact us ,we make sure your every question will be
answered in time .
