Tubular Tower Price: What Determines the Real Project Cost?

When requesting the cost of a tubular tower, not to specify some technical details, is a bit like asking for the cost of a building without specifying its size and purpose. Very different steel thicknesses, foundations and accessories may be needed for two towers of the same height.

A useful quotation should relate to a design basis agreed to be the design and provide scope. As for buyers, that isn't the real goal at all. It is to make technical comparisons of equivalent towers and to know the whole cost of tower installation.

Why There Is No Standard Price Of Tubular Tower?

The tubular towers are generally customized for telecommunications, broadcasting, power structure, lighting. There are varying structural loads and operating requirements for each application.

Height just isn't the only factor. The tower diameter, wall thickness and foundation reactions may vary due to the number of antennas, the area of the microwave-dish, the conductor load, wind speed, seismic condition and design standard.

XY Tower's steel tubular towers come in a variety of configurations and heights. A quotation for a project is therefore more reliable than a quotation per tower.

What's the impact on cost due to height and loading?

In general, the higher the building, the greater amount of steel required, but there is not a linear relationship between the height and price. As the height increases the wind forces and the bending moments increase, especially at the base.

The equipment mounted can be of equal significance. High wind areas and structural requirements due to large microwave dishes, platforms, antennas and offset brackets. For a given amount of equipment, the positioning is closer to the top is more effective.

Future loading also should be taken into consideration. A reasonable expansion allowance might be worthwhile, although it adds to the initial cost, it could save on costly reinforcement if additional antennas or equipment were added later.

What is the impact of the structure of the form on the quotation?

There are several types of structures that can be called a “tubular tower.” The tubular monopole is a monopole consisting of a single tapered shaft made up of flanged or slip-jointed shafts. A tubular lattice tower is one which has round steel tubes as the legs and bracings. The tubular guyed tower depends on the guy wires and the ground anchors.

The amount of steel and foundation, land area and erection method are different depending on the designs. A guyed tower can be cost-effective for a site where there is adequate open space and a compact monopole tower may be appropriate for an urban area.

When comparing prices, buyers should ensure that all suppliers are quoting for the same type of structure.

What is the Price Difference between Steel Grade & Fabrication?

The total weight and the steel grade used directly has an influence, as it is a large part of the costs. Although, higher strength grades of steel might allow some sections to be lighter, other considerations such as availability, welding requirements, local standards, etc., will have an impact on the economic value.For Chinese‑standard tubular tower projects, commonly‑used steel grades include Q235B, Q355B and Q420B. Steel members for cold regions shall satisfy specified low‑temperature V‑notch impact‑toughness requirements.

Plate forming, rolling, longitudinal welding, flange making, drilling, fitting and dimensional inspection are some of the operations carried out in the fabrication. For Chinese domestic projects, weld classification and non‑destructive testing (NDT) requirements for tubular joints and flange connections shall follow relevant national standards.The more complicated tapers, thicker plates and/or heavily reinforced openings take more manufacturing time.

The quotation should specify the steel grade and steel material standard. A low price on the basis of a grade that is not specified, cannot be compared in a fair manner with an offer backed up with traceable material certificates.

What is the Added Cost of Galvanizing?

During on‑site erection following Chinese construction specifications, specified final tightening torque shall be strictly implemented for grade‑4.8 and grade‑8.8 bolts.The hot dip galvanized tower is resistant to atmospheric corrosion. Depending on the surface area of steel, weight of the tower, dimensions of the sections, surface treatment and handling, its price can be affected.

Special galvanizing arrangements may be necessary for long or wide sections. Vent and drain holes should be correctly designed to allow the safe flow of molten zinc through enclosed tubular components.

A tubular tower designed for use in coastal or industrial areas may require the specification of a more rigorous corrosion protection. This can be more expensive up front, but will help with the amount of repainting and maintenance throughout the tower's lifespan.

What Are Common Optional Features For a Base Price?

The tower body quote may not include antenna mounts, platform, ladders, fall-arrest rails, cable supports, aviation light, lightning protection, grounding parts and anchor bolts.

Mounts can be a significant cost in a telecom project since they are dependent on the number of pieces of equipment and stand-off distance and orientation, which depend on the equipment plan. Special detailing may be required for internal cable-routing systems and antenna configurations that are not obvious.

Buyers need to ask for a priced accessory list rather than being led to believe that all of the accessories shown are included. This helps to differentiate between optional and mandatory items.

What is the added cost of foundation & installation?

The Cost of the Steel Tower is not equal to the installed site cost. Tower reactions, soil conditions, groundwater, seismic criteria and available construction space are the factors which determine the foundation requirements.

Even if a tower is lightweight it can impose high overturning or uplift forces, and in these cases an expensive foundation will be required. The installation cost also varies depending on the tower height, section weight, crane access, crew availability and local safety requirements.

The professional tower design service can provide foundation reactions and coordinate drawings but the buyers should verify whether the detailed foundation design and civil construction comes with the scope of quotation or not.

What is the relationship between Packaging and Freight and Export Prices?

Even with moderate weight of steel, the tower sections are big when tubular. The shipping cost is thus affected by section length, diameter, nesting efficiency, type of container and destination.

Break bulk transport or oversized sections may be necessary for oversized sections. Shorter sections may increase the number of flanges, bolts and on-site assembly tasks to increase container utilization.

Galvanized surfaces and attachments should be protected in the export package and the accessibility to detect the identities of accessories should be maintained. In freight comparisons, the same Incoterm and destination should be used; it is not possible to compare, for example, an EXW price with a CIF or delivered-site offer.

How to compare Tubular Tower Quotes?

Firstly, verify the technical basis, including the type of tower, tower height, equipment load, wind conditions, design code, steel type and corrosion protection. Then, check the list of parts and accessories.

Discuss the cost of structural calculations, drawings, prototype fitting, inspections, packaging and freight, installation guidance and documentation. Project cash flow can also be impacted by delivery time and payment terms.

A reliable supplier will tell you why there is a significant weight or price variation and not just give me the total weight or price. Completed tower projects can also be reviewed to ensure the experience with similar structures and delivery conditions.

What is the best way for a Buyer to get a more accurate price?

Submit a full RFQ package to each supplier that has been shortlisted. It should be comprised of site location, tower use, required height, equipment schedule, wind and seismic information, design standard, accessories, quantities and delivery destination.

Make it clear that if information is not available it should be identified as such and all suppliers should make the same provisional assumption. This eliminates the possibility of each bidder pricing a different tower.

A project specific tubular tower quotation can be made available to the buyer via the XY Tower contact page by providing their requirements.

Conclusion

The price of tubular tower is not only affected by the weight of steel. These all add to the final project cost: structural loading, manufacturing complexity, galvanizing, accessories, foundation requirements, packaging and freight.

Don't automatically assume that the lowest price is the best quote. It's the offer that has good design basis, scope and few assumptions. The quickest way to get a realistic and comparable price is to provide accurate information on the RFQ.

FAQ

Q1. Is a tubular tower a "ton" or unit priced tower?

Either approach is acceptable, but the proposal should be centered on a specific design and scope for the tower. The price per ton does not indicate if the accessories, engineering or galvanizing are included.

Q2. Is the height of a tubular tower always higher priced?

Typically, however, it is not the only consideration — height is involved as well. Two towers of the same height can differ significantly in cost due to wind load, position of equipment, tower diameter and foundation reactions.

Q3. Do they usually charge for galvanizing?

It's frequently added to the outside steel towers, but the subsequent customers must confirm the coating standard and inspection scope. Do not presume all quotations offer the same corrosion protection.

Q4. Is foundation part of the tubular tower quotation?

Not always. Some quotes include just the steel tower and anchor bolts but the foundation design and civil construction are quoted separately.

Q5. What is needed for an accurate tubular tower quotation?

Excellent tower height, application, equipment loads, wind and seismic data, design standard, accessories, quantity and delivery location. When requested for foundation pricing, soil information is required.