성원제강(주)

Manufacturing Process

Entry

The process of uncoiling the SKELP for leveling,
and inserting into the accumulator

Cutting, Coupling

The process of coupling 2 SKELP for finishing cutting
and welding on both ends.

3. Accumulator

Up to 100T SKELP can be stored, and it enables
high-speed work and continuous production

Forming

API and KS rolls are equipped, and roll stands
for various outer diameters (nominal) to enable
the SKELP to be manufactured into the PIPE.

Welding

The high-performance welding machine that was
custom-built by THERMATOOL enables welding up to 15T

Heat Treatment

The process for eliminating the residual stress on the
welding zone generated during the welding process and
to secure uniform metal texture and physical properties.

7. Cooling

The process of slow and rapid cooling to obtain
the preferred texture. (Air Cooling + Water Cooling)

Trimming

Passing the welded pipe into the roll for each outer
diameter (nominal) for calibration into the standard size

Cutting

The cutting machine performs two-way motion in the
speed equal to the pipe, and the pipe can be cut into standard
length or the length requested by the client without noise.

Calibration

The process of correcting the straightness on the bending
of the pipe caused from welding and heat treatment, etc.

Chamfer

The process of processing the pipe section in the pipe
(bevel, perpendicular) form requested by the client.

ECTECT(Non-destructive Test)

The process of inspecting the defects such as
the scratch or crack, etc. on the pipe surface with the ECT
(Eddy Current Testing) equipment.

Hydraulic Pressure

Pressurizing and maintaining in the constant pressure
by filling the water into the pipe to check any leakage defect.

UT(Non-destructive Test)

Non-destructive test of using ultrasonic waves to inspect
the defect or state of the base metal and the weld zone.

Product Inspection

The process of verifying the dimension and appearance
of the final product to judge the conformance.

Varnishing

Various varnishes are provided, and export items
are applied with non-transparent black varnish to protect
the product surface and to prevent corrosion

Marking

The electronic marking machine is used for paint marking
of the standard marking or the customer
requirements on the PIPE surface.

Packing

The process of tying in a fixed quantity
unit for banding and attaching the protective cap or protector
to protect the products and for convenience in handling.