Features & Benefits of Springs for Construction
Coiling Technologies, Inc., designs and manufactures heavy-duty springs for the construction industry. Common types of springs used in construction include compression springs, extension springs, cantilever springs, and leaf springs. Springs configured in this industry are exposed to massive loads exceeding 100,000 lbs. and operate in some of the harshest environments.
Our engineers can design the spring to meet all the above-mentioned criteria and deliver robust springs that perform consistently even in the most abusive environments like frozen tundra or exposure to salt air on an oil rig.
Spring Alloys for Construction Applications
Common spring alloys for these applications are AISI 5160, AISI 4161, AISI 6150 and ASTM A229, ASTM A401 These materials are subject to processing per ASTM A 689, ASTM A434, ASTM A321, ASTM A322, ASTM A29, ASTM A108 and hardenability to ASTM A304
Springs Applications
Coiling Technologies, Inc. produces springs for applications such as Buffer Springs for elevators, Vibration Isolation Springs for HVAC systems, Pipe Hanger Springs, Seismic and Foundation Springs, heavy-duty equipment, trucks, and construction equipment. The most common type of springs for these applications are compression and extension, however, in some applications, the use of cantilever or lead spring can be utilized as well.
Manufacturing Springs for Construction
Each spring undergoes cold coiling, heat treatment, grinding, shot peening, powder coating, and non-destructive testing to ensure the quality and performance of the spring. Our team of experienced spring manufacturers can help in the design and production of a spring for your construction application.
Contact us today to learn more about our custom spring design services for the construction industry.
Springs for Construction FAQs
What types of springs does construction equipment use?
Compression and extension springs cover most construction applications, with cantilever and leaf springs used where the load path suits a flat form rather than a coil. Coiling Technologies produces buffer springs for elevators, vibration isolation springs for HVAC systems, pipe hanger springs, seismic and foundation springs, and springs for heavy equipment, trucks, and construction machinery. The choice follows the load path and the space available. A buffer spring stores energy in a single event, a vibration isolator works continuously at low amplitude, and a seismic spring may sit at static load for years before it is asked to do anything at all.
How large are the loads in construction spring applications?
Springs configured for this industry routinely see loads exceeding 100,000 lbs. At that level, wire and bar stock section size drives the entire process. The largest springs are made from hot rolled alloy bar and coiled hot rather than cold, because the material cannot be formed cold at those sections. Large and heavy duty springs are a stated specialty at Coiling Technologies, which matters when a design outgrows the range a general spring shop can coil, heat treat, and grind. Load capacity, solid height, and buckling behavior all need checking together at these sizes rather than in sequence.
Which alloys are used for construction springs and why?
Common alloys for these applications are AISI 5160, AISI 4161, AISI 6150, ASTM A229, and ASTM A401. AISI 5160 is a chromium alloyed spring steel with good hardenability in heavy sections, which is why it dominates large suspension and high load springs. AISI 6150 adds vanadium for finer grain and better fatigue behavior at high hardness. ASTM A229 oil tempered wire is the economical choice for smaller cold coiled work, and ASTM A401 chrome silicon handles higher design stress and moderate heat. Section size and stress level, not preference, usually decide which of these an individual design lands on.
What processing and hardenability standards can I specify?
These materials are subject to processing per ASTM A689, ASTM A434, ASTM A321, ASTM A322, ASTM A29, and ASTM A108, with hardenability to ASTM A304. If your drawing calls out any of these, Coiling Technologies can build and heat treat springs to meet them, with heat treating performed in house. Naming the processing standard on the drawing rather than leaving it to the supplier is worth doing on structural and load bearing springs, because it fixes the hardness range and the mechanical properties your load rating depends on. Coiling Technologies is ISO 9001:2015 certified and manufactures to customer specifications.
What manufacturing steps does a construction spring go through?
Each spring undergoes cold coiling, heat treatment, grinding, shot peening, powder coating, and non-destructive testing. Every one of those steps happens in the Houston facility under a single ISO 9001:2015 quality management system, with no outside vendors in the sequence. That continuity matters on heavy springs, because heat treatment sets the mechanical properties the load rating assumes, shot peening determines fatigue life, and non-destructive testing is what catches a quench crack or a wire seam before the spring ships. When those operations are split across three suppliers, traceability from finished spring back to raw material gets much harder to hold.
How do site conditions change material and finish selection?
Construction springs operate in frozen ground and in salt air on offshore structures, and those two conditions pull a design in different directions. Low temperature raises the risk of brittle behavior, which argues for controlled hardness and clean surface condition. Chloride exposure drives pitting, and a pit in a spring surface is a fatigue crack starter. For most construction work the economical answer is an alloy steel spring with powder coating, applied in house at Coiling Technologies. Stainless or a nickel alloy earns its cost only where the spring cannot be inspected or recoated during its service life.
What quality documentation can I get with a construction spring order?
Coiling Technologies can supply material certifications with chemistry and mechanical property data, dimensional inspection reports showing measured values against your drawing tolerances, first article inspection documentation, load test data, and traceability from the finished spring back to incoming raw material. On seismic, foundation, and elevator buffer springs, that documentation package is often what the specifying engineer needs for sign off, so state at quote time which records you require. Products are analyzed before and during production against customer specifications under the ISO 9001:2015 system, which is where those measured values come from.
