The following are the sizes of Billets available:

50X 30
60 X 40
70 X 40
80 X 60
100 X 60
120X 80

Each steel rail application is different and must be engineered to maximise efficiency and lifespan, therefore the selection of the correct rail is critical to achieving this end.Crane travelling steel rail tracks are designed for carrying heavy and small loads and are used in a wide variety of applications. There are seven standard crane rail models called P18, P24, P38, P43, QU70, QU80, QU100 in China. Rail weight ranges from 18kg to 88kg per meter. You can find a weight and measure conversion table on to us if you need.

The both end side of this billet was cut by Sawing machine which is very easy for assemble.We customize radius of the angle to be 3mm, which is most suitable for rail wheel to run.The material of our billet is Q345B, which is similar to A572, GR 50, please refer to the attached comparison document.
Our billet is very straight and The surface of our billet is very smooth.

Type: Other
Material: Q345B
Dimensions (L x W x H) (mm):50mm*30mm
Place of Origin: China (Mainland)
Size: 50*30, 60*40, 70*40, 80*60, 100*60, 120*80

Introduction
Square billet is widely used for bridge cranes, gantry cranes, etc.
it is featured by smooth running effect, easy assemble.

Crane travelling steel rail tracks are designed for carrying heavy and small loads and are used in a wide variety of applications. There are seven standard crane rail models called P18, P24, P38, P43, QU70, QU80, QU100 in China. Rail weight ranges from 18kg to 88kg per meter. You can find a weight and measure conversion table on to us if you need.

Each steel rail application is different and must be engineered to maximise efficiency and lifespan, therefore the selection of the correct rail is critical to achieving this end.

We customize radius of the angle to be 3mm, which is most suitable for rail wheel to run.The material of our billet is Q345B, which is similar to A572, GR 50, please refer to the attached comparison document.
Our billet is very straight and The surface of our billet is very smooth.
The both end side of this billet was cut by Sawing machine which is very easy for assemble.

    Nante Machinery is a subsidiary company of Zhejiang Zhongjian Road & Bridge Machinery Co, . LTD.

    We have 25 years experience in lifting equipment manufacturing.Four production bases and two R&D Centers covers an area of morethan 100, 000 square meters, and above 400+ skilled employees, among which, a rough 10% are engineers. Our production lines are all equipped with world-leading brand tools and devices.

    In recent years, our annual revenue has steadily exceeded 80 million USD, in which  20% are contributed from oversea market. We have established long term business relationship with lots of clients from USA, Singapore, Indonesia, Kenya, India, Cambodia, South Africa, Albania, Chile etc. 

    As a mature heavy machinery manufacturer, we not only produce individual industrial equipments, but also deliver an end-to-end solution to cover the entire project lifecycle including machinery design, manufacturing, installation and on-going maintenance. We have more than 50 models of products, which can be divided into five major categories as following:

1. Series of construction cranes

Bridge launching crane, form traveller, bridge deck launching gantry, tower crane etc.

2. Series of workshop, shipyard, and port cranes

overhead crane, gantry crane, jib crane and portal crane etc.

3. Various parts of cranes

Electric hoist, winch, motors, rails, bus bars etc.

4. Structural steel projects

Contractor of industrial steel structures such as new-built workshops, towers, chutes, etc

5. Steel Bailey bridges

Two standard models called Compact 100 and 200 in International market

    Quality concept lies deeply in our blood:

1. Passed ISO9001:2008 Quality Management System

2. Holder of Class A License of Manufacturing and Repairing of China Specialized Equipments.

3. Member of China Construction Machinery Association.

4. China AAA Credit Company

5. ZHEJIANG Top Brand and Trade Mark

    Fact is always more persuading than paper works. We Design and Build Chinese highest truss gantry crane, longest beam launcher and Drafter Chinese beam launcher national standard.

    We pursue the value of professional, innovation, integrity and win-win in our company’s long term development strategy. We target to become one of China’s top manufacturer and solution provider in the heavy machinery industry and a competitive player in the overseas market.