Specific steps:

When raw materials arrive, chemical composition and tensile performance testing are performed to ensure there are no cracks or segregation.
They are batch-cut or cut to standard lengths as per customer requirements, avoiding dimensional deviations that may affect precision during later processes.
Necessary derusting and anticorrosion steps are applied to coils or billets to prevent surface defects from impacting appearance or subsequent operations.

Importance:

These directly determine the final performance of the tubing and are the fundamental guarantee for high precision and stability.
Uniform batch traceability ensures material consistency and traceability, reducing rework risks downstream.

Specific steps:

Billets are pierced and hot-expanded or hot-rolled into rough tube blanks with controlled dimensions.
Subsequent cold rolling or cold drawing significantly reduces inner diameter tolerance and improves internal surface smoothness.
Throughout the process, temperature and drawing speed are monitored in real-time to prevent hot cracking or uneven deformation.

Importance:

High-precision primary billets ensure the smooth progress of subsequent processes and enhance control over key dimensions.
Material waste is minimized while improving equipment stability and overall yield.

Specific steps:

Cold drawing is performed using various mandrel systems (floating or fixed) to precisely control inner and outer diameters.
After each pass, dimensional inspections are conducted, and die spacing is adjusted dynamically to ensure uniform contraction and structural enhancement.
Precision of ±0.03‑0.05 mm can be achieved, along with improved mechanical strength and hardness.

Importance:

Strict dimensional and mechanical tolerances are achieved to meet the requirements of precision assembly.
Cold working densifies the grain structure, prolongs service life, and enhances fatigue resistance.

Specific steps:

Precise control of temperature and soaking time during annealing helps eliminate internal stresses and restore ductility.
Advanced products may require normalizing, quenching, or tempering to enhance tensile strength and wear resistance.
Microstructure and hardness testing follows each thermal cycle to verify uniformity and surface integrity.

Importance:

Internal stress is effectively controlled to prevent deformation or cracking during later machining.
Critical industries benefit from the stability and long fatigue life our products deliver.

Specific steps:

Multi-roller straighteners are used to align the tube within < 1 mm/m straightness tolerance.
Pipes are then accurately cut to custom lengths using precision saws, ensuring smooth and consistent ends for downstream operations.
Chamfering is performed with CNC lathes to eliminate sharp edges and reduce residual stress.

Importance:

Excellent straightness ensures smooth installation and structural accuracy.
Smooth end faces reduce equipment wear and ensure safety in welding or assembly.

Specific steps:

Ultrasonic and eddy current testing are used to detect internal flaws such as inclusions, cracks, or porosity.
Hydrostatic or pneumatic pressure tests verify pipe sealing and load-bearing capacity.
All results are digitally recorded for traceability; any non-conformities are isolated for analysis and corrective action.

Importance:

Potential quality risks are eliminated to guarantee safety and reliability in end-user applications.

Specific steps:

Oxide scale and surface impurities are removed via pickling, phosphating, or sandblasting.
Depending on client needs, hot-dip galvanizing, electroplating, or epoxy powder coating can be applied.
Coating thickness and adhesion are tested per ASTM, DIN, or equivalent international standards.

Importance:

Enhanced corrosion resistance extends service life and ensures adaptability to harsh environments.
Surface finish improvements elevate product appearance and boost brand image and market competitiveness.

Specific steps:

Processes like turning, milling, boring, knurling, stamping, bending, and laser cutting are offered to support customized features such as threads, grooves, keys, and joints.
Automated high-precision equipment ensures batch consistency within ≤0.1 mm machining allowance.
Special forming like hydraulic expansion or hot bending enables production of complex-shaped components.

Importance:

Precision machining capabilities support high-end mechanical assemblies, increasing assembly efficiency and dimensional accuracy.

Specific steps:

Advanced forming technologies such as hot bending, hydraulic forming, and roll shaping enable production of complex cross-sections and large components.
Processes like hydraulic expansion and internal pressure forming are ideal for precision fittings or sleeves.
Custom tooling supports low-cost, small-batch, and high-flexibility production.

Importance:

These capabilities meet the diverse structural needs of engineering machinery and hydraulic systems.