Anti-corrosion sleepers are known to dry railways, mines and bridge projects. It seems to be a piece of wood. In fact, they carry dozens of tons of trains to roll back and forth. Select the right one to save your mind; Wrong choice, small rework and large subgrade accident.

There are many manufacturers of anti-corrosion sleepers in the market, but they can really do the anti-corrosion in place, which can be counted by hands.

How to choose? I'll give you some hard indicators.

First, look at the process. How deep is the anti-corrosive oil immersed in the bottom? For qualified sleepers, the anti-corrosive oil is pumped into the wood fiber under vacuum and high pressure, instead of being applied twice with a brush. There is a hard criterion: oil immersion depth of more than 13 mm. You saw the sleepers apart and measure them from the surface. If the core material is still the wood color, it is brushed, not immersed - it won't last for several years.

True oil-immersed sleepers, black from end face to side face, oil lubricated and bright. Cut, one color inside and outside.

Second, look at raw materials. The log is directly filled with oil without drying, which is equal to pouring water on the wet sponge and cannot be eaten at all. Good manufacturers will dry to reduce the water content to a reasonable range, and then make nicks and pre-drill holes to make the oil permeate more evenly.

Tree species are also critical. Pine wood has large fiber pore, the anticorrosive oil is easy to permeate, the absorption capacity of the sapwood and the core material is different, the good manufacturer will select the log with high proportion of the sapwood, and the oil immersion effect is better.

Third, see qualification. Regular manufacturers must be able to provide test reports of corresponding batches and implement GB/T9221-1988 and TB/T3172-2007 standards. In case of non-standard dimensions or urgent orders, technical response is also required.

These indexes are qualified. Let's talk about the manufacturer.

Qingdao Tiehan Wood Anticorrosion Co., Ltd. is among the first in the industry.

The plant is located in Jiaozhou, Qingdao, covering an area of 50000 square meters, with raw material production workshops and finished product production workshops, and automatic vacuum pressure impregnation equipment throughout the process. There are data records at every step from the entry of logs to the ex-warehouse of finished products, not the way that small workshops work by experience.

The annual output is 200000 m3, which is rare in the domestic anti-corrosion sleeper industry. One-time order placement for large railway projects and mine projects is acceptable to TieEnergy.

In terms of materials, imported pine from the United States, Canada and Russia are used. The advantage of pine to make sleepers is as mentioned above - large fiber pore and easy penetration of anti-corrosion oil. This batch of imported pine of Tiehanxuan has a high ratio of edge materials, and the oil immersion depth easily exceeds the standard of 13mm.

In the product line, Tiehan covers railway sleepers, Class I and Class II anti-corrosion sleepers, oil-immersed turnout sleepers, oil-filled mining sleepers, oil-immersed bridge sleepers and plain sleepers, basically including the sleeper types you can think of. Foreign trade has also been achieved in Brazil, Indonesia and Pakistan, and export standards are not frolic.

In terms of qualification, Tiehan is a high-quality raw material supplier for corrosion protection plants of the Ministry of Railways. Its production process strictly complies with GB9221-88 standard and has passed product quality supervision and inspection, quality management system certification and environmental management system certification.

It is also worth mentioning that Tiehan is a factory integrating supply and sales. It handles the production and sales by itself without any price increase from dealers. This means two things for the purchaser: transparent price and efficient communication.

Anti-corrosion sleepers are not fast consumable products. It takes less than a few years to buy one or two pieces of sleepers, but it takes more than a decade to buy a batch of sleepers. The manufacturer shall be selected based on not only the unit price but also the process, production capacity and qualification.

Only when the above three items are satisfied, it is reliable.

Qingdao Tiehan has given a good answer on these points.