How are Yongxin coils packed by default

Packing is made per customer requirement. State coil weight, inner diameter, wrapping and marking with your order and it will be quoted accordingly.

What causes surface rust after shipment

Most commonly condensation, when a cold coil is unwrapped in a warm humid store. Let the coil reach ambient temperature before opening the wrapping.

Can thin strip coils be stacked

Only if the packing was designed for stacking. Edge damage on thin strip cannot be repaired, so ask before stacking.

How long can precision strip be stored

Store indoors, dry, off the floor and rotate stock so older coils are used first. If material has been stored a long time, inspect the outer wraps before running it.

Maintenance Guide

Packing Handling and Storage of Precision Steel Coil

Thin strip is easy to damage after it leaves the mill. This guide covers what to specify for packing and what to control in your own warehouse.

Published by Yongxin Precision Material (Wuxi) Co., Ltd. · Wuxi Jiangsu China

Why Packing Is Part of the Specification

Yongxin packs coils per customer requirement rather than to a single house standard, because a coil that suits an overhead crane and a mandrel decoiler is packed differently from one that has to be moved on a pallet truck. State what your plant can handle and the packing will be built around it.

What to Tell Us

Maximum coil weight your handling equipment accepts
Inner diameter required by your decoiler mandrel
Maximum outer diameter your equipment can take
Whether coils are handled eye to sky or eye to wall
Wrapping, moisture protection and pallet requirements
Marking, labelling and language required for customs and for your incoming inspection

Receiving a Coil

Check the outer wrapping for tears and water marks before it is moved inside
Confirm the coil marking matches the packing list and the mill test certificate
Leave the wrapping on until the coil has reached the temperature of the storage area, since condensation on cold steel is the most common cause of surface rust after shipment
Record any transit damage with photographs immediately, because that record is what makes a claim workable

Storing Precision Strip

Store indoors in a dry area with stable temperature rather than in a yard or against an external wall
Keep coils off the floor on racks or dunnage so damp cannot wick into the packaging
Do not stack thin strip coils on top of each other unless the packing was designed for it, since edge damage from stacking is not repairable
Use older coils first so material does not sit for long periods
Keep the mill test certificate with the coil, or at least the traceable coil number, so a later question can be traced back

Handling on the Line

Support the coil eye correctly on the mandrel, since an unsupported thin coil telescopes easily
Set decoiler tension carefully, because thin strip stretches under tension that would be harmless at thicker gauge
Keep gloves and tooling clean when the strip has a specified surface, particularly if the next process is plating or bonding
Do not remove strapping while the coil is unsupported

If Something Arrives Wrong

Send photographs, the coil number and the measured values with the position they were taken. Because rolling, annealing, levelling, slitting and testing all sit inside one plant, a query can be traced back through the process record rather than passed between subcontractors.

Cold Rolled Steel Foil/Coil0.035 - 0.8 mm thickness / 50 - 520 mm widthDeep drawing quality SPCC, SPCD and SPCE strip down to 0.035 mm for stamped brackets, tube stock, enclosures and lamination blanks.