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1. The raw
materials we purchased
must go through strict
physical and chemical
inspections, and they
can be accepted into the
factory after
qualification in such
inspections.
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| 2.Chaining
is an important link in
making chains. Shown is
the automatic chaining
machine, a state patent
product developed
exclusively by our
factory, in operation.
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3. We employ various
welding types: flashing
butt welding, resistance
welding and gas
protection welding. To
ensure product quality,
we have imported the
most advanced automatic
chain welding machine in
the world from the
WAFIOS of Germany.
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| 4.Heat
treatment will be
performed for chains for
special applications. We
generally use such means
of heat treatment: MF
quenching, salt solution
quenching, carburization
treatment. These will
increase the strength or
hardness of the chains.
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5. All
chains must be surface
treated. We employ such
treatment methods:
rolling in natural
color, electric
galvanizing, hot
galvanizing, plastic
spraying, plastic
immersion, painting,
brunofixing and
electrolytic polishing
for stainless steel
chains. Shown is a
corner of the
galvanizing shop.
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| 6.The
packaging method of
chains can be selected
by the customer. We use
such materials for
packaging: sacks,
plastic drums, iron
drums, plastic boxes,
cartons, wooden boxes
and winding on drums.
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7. During the
manufacture, appearance,
dimensions and loading
testing shall be made
for all products, and
breaking load tested on
sampled basis. Before
leaving the factory, the
packaged chains will be
sampled according to
relevant standard for
final inspection on
surface treatment,
appearance, dimensions,
marks, length, weight,
surface hardness and
breaking load.
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