COMPANY 04 · QUALITY

Quality control: three checks, and the one that matters most.

Incoming coil, in-process dimensions, and final coating and packing. The check that matters most is the one most suppliers skip: the first bundle, assembled, before the rest is shipped.

Multi-span film house, exterior — XinYonSen

Control points
Stage	Check	Record
Incoming coil	Coating mass, thickness, width, surface	Coil record + mill cert
Forming	Section dimensions, wall, ovality	First-off + hourly sample
Bending	Radius, ovality after bend, orientation mark	Setup approval per span
Punching	Hole position and diameter vs pattern	Pattern check per bundle
Welding	Visual, dimension, coating repair	Weld record
Coating	Thickness at defined points, bare spots	Coating certificate
Packing	Bundle count, marks, protection, fittings	Packing list + photos

First-off approval happens before the run, not after it.

The check that matters most

Assemble one arch with its purlins and one gutter section on the floor of the works, photograph it, and send the photo with the inspection pack. It catches the failures that dimension sheets miss: a clamp that does not fit the oval, a punch pattern mirrored on one side, a gutter bracket at the wrong height.

Records we keep

Coil records tied to heat numbers.
First-off and sample records per run.
Bend setup approvals per span.
Coating certificates per batch.
Packing lists with actual bundle weights.

What we do not claim

We do not hold a current ISO 9001 certificate to show you, and we will not imply one. What we have is a control process and records; if a certificate is a condition of your order, tell us before we quote.

Open selection list

Verify us before you commit

Ask for the mill certificates, the packing photos or a video call on the line. We would rather answer those questions now than after the deposit.

Request documents & a call WhatsApp the sales desk