复合钢管，简称为“钢塑复合管”，是一种结合了钢铁的强度与塑料的防腐性能的新型管道材料。它以钢铁为基体，涂覆一层或多层塑料材料，形成一个保护层，这个保护层不仅能够有效防止腐蚀，还能提供良好的耐磨性和耐火性，使得复合钢管在各种恶劣环境下都能保持其性能。

复合steel pipe, also known as "steel-plastic composite pipe," is a new type of pipeline material that combines the strength of steel with the corrosion resistance of plastic. It uses steel as the base material and covers one or more layers of plastic materials to form a protective layer. This protective layer not only effectively prevents corrosion but also provides good wear resistance and fire resistance, making it possible for composite steel pipes to maintain their performance in various harsh environments.

The main advantages of composite steel pipes include excellent anti-pressure and anti-tensile strength, outstanding acid-base corrosion resistance, high wear-resistance, colorful appearance, improved transport efficiency in different industries. Additionally, these pipes have better hygiene standards compared to other types of pipes; they are less prone to accumulate dirt over time and do not breed bacteria easily.

Now let's look at some specific prices for composite steel pipes:

Inner-outer coated HDPE composite steel pipe: Produced by Cangzhou Youtong Pipe Industry Co., Ltd.

Minimum order quantity: 10 pieces

Price: ¥680

Nominal outer diameter: 720mm

Wall thickness: 8mm

Length: 12m

Material grade: Q235B

Plastic-coated EPDM inner-outer combined tube:

Produced by Hengyang Xingye Pipe Industry Co., Ltd.

Minimum order quantity：6 meters

Price：¥252.20/ meter (for ≥6 meters)

Material grade：Steel-plastic combined

DN200 PE-coated galvanized carbon steel pipe:

Produced by Wujian City Ba Jiang Materials Co., Ltd.

Minimum order quantity：

• For orders between 1-49 tubes：¥1269 per tube

• For orders between 50-99 tubes：¥1267 per tube

• For orders ≥100 tubes：¥1265 per tube

In conclusion, while there are many manufacturers producing high-quality composite steel pipes with competitive pricing options available on the market today – such as those from Cangzhou Youtong Pipe Industry Co., Ltd., Hengyang Xingye Pipe Industry Co., Ltd., or Wujiang City Ba Jiang Materials Co., Ltd – each has its unique characteristics regarding size range and price point depending on specific needs within your business operations!