Type F Variable Spring Support

Yangzhou Tianshun Pipeline Technology Co., Ltd., founded in 2012, manufactures a full range of products in strict accordance with the HG/T 20644 Variable Spring Supports and Hangers standard. Type F Variable Spring Support is the base-type support product in the standard series, specially designed for bottom support of pipelines. It is widely used in small and medium displacement pipeline systems in power, petrochemical, metallurgical and other industries, and is one of the most widely used variable spring models in engineering.

Product Technical Specifications

Structure and Features of Type F Product

Type F Variable Spring Support adopts a vertical box structure, composed of the following parts:

▶  Base plate: Wide support base plate, connected to the foundation

▶  Spring cylinder: Built-in cylindrical helical compression spring

▶  Top plate: Load plate, connected to pipe support

▶  Displacement indicator plate: Marked with cold and hot state positions

▶  Locking bolt: Locked during transportation and installation

▶  Height adjustment bolt: On-site fine adjustment of load

Core Design Features

Standard modular design

Fully compliant with HG/T 20644 standard, interchangeable with products from other manufacturers

Standardized load and displacement series, convenient for design institute selection

Unified installation dimensions, convenient for engineering procurement

Factory pre-setting

Spring pre-compressed according to design load, locked at cold state position

Only need to remove locking bolts after on-site installation to put into use

No need to adjust spring compression on site

Compact structure

Vertical design, small floor area

Overall height 200-400mm, suitable for space-constrained occasions

Low center of gravity, good stability

Convenient maintenance

Spring assembly can be pulled out and replaced separately

Clear displacement indication, during inspection

No wearing parts, maintenance-free design

Type F Technical Parameter Quick Reference Table

Execution Standard: HG/T 20644-2024Load Change Rate: ≤25% (standard requirement)Spring Material: 50CrVA spring steelShell Material: Q235BAnti-corrosion Treatment: Sandblasting derusting + epoxy zinc-rich primer + topcoat

Detailed Explanation of Model Coding Rules

Standard model coding example of Type F Variable Spring Support:

Required parameters for selection:

▶  Pipeline working load (kN)

▶  Pipeline vertical thermal displacement (mm)

▶  Displacement direction (upward / downward)

▶  Environmental corrosion grade

Our professional team can directly provide accurate Type F product models based on the pipeline parameters you provide.

Selection Example (Step-by-Step Guide)

Example working conditions:

▶  Pipeline working load: 15kN

▶  Pipeline upward thermal displacement: 40mm

Selection steps:

1.Determine displacement series: 40mm displacement, select 60mm series (reserve margin)

2.Calculate hot state load: upward displacement, spring releases, load decreases

3.Check spring stiffness table: select spring No.106, stiffness 0.25kN/mm

4.Calculate load change: 40mm × 0.25kN/mm = 10kN change

5.Verify change rate: 10kN / 15kN = 6.7% ≤ 25%, meeting requirements

Final model: TF106-60/15kN

The selection of Type F Variable Spring Support seems complicated, but actually follows standards. We provide free selection service: you only need to provide pipeline parameters, and we will provide accurate models.

Typical Application Scenarios of Type F

Quality Control and Delivery

Production Quality Control

Special spring inspection: 100% load test for each spring, record stiffness curve

Pre-compression setting: accurately compressed to cold state position according to order requirements, locked

Displacement indication calibration: indicator plate position accurate to ±1mm

Anti-corrosion treatment: Sa2.5 grade sandblasting, coating thickness ≥80μm

Appearance inspection: comprehensive inspection of welds, dimensions and markings

Delivery Advantages

Stock available: common models (TF030-TF120, 30/60/90 displacement) in stock

Fast delivery: stock orders shipped within 3 days, custom orders 7-10 days

Bulk price: tiered price for engineering bulk procurement

Complete documentation: each batch of products comes with qualification certificate, spring test report, installation instructions

Service and Support

Free selection: Professional engineers provide selection calculation to ensure accurate model

Drawing provision: Provide standard installation dimension drawings to cooperate with design

Technical support: Answer various questions in installation, commissioning and use

Quality warranty: 2-year product warranty, free replacement for non-human damage

Emergency response: Provide solutions for on-site problems within 24 hours

Spare parts: Stock spring assemblies, bolts and other wearing parts

Type F Variable Spring Support is a standard general product in the chemical industry, and also the most widely used variable spring model in engineering. We have focused on standard series production for 14 years, with stable product quality and timely delivery, and have served engineering projects in more than 40 countries around the world. Choose standard Type F, choose reliability and convenience.