Analysis of the four advantages of the injection molding process and three major disadvantages

The hollow plastic products produced by the injection molding process have the following advantages compared with the hollow plastic products of the extrusion process:

1 Plastic bottles are molded from raw materials to finished products at a high degree of automation. They do not require manual secondary processing, save labor, and are hygienic and meet the GMP requirements for pharmaceutical packaging. They are especially suitable for the production of pharmaceutical bottles.

2 The appearance of the product is beautiful, the size of the bottle mouth is accurate, and the weight of the plastic bottle is stable.

3 The plastic product is made by one-shot blow molding of the injection type embryo, and there is no waste at the mouth and the bottom of the bottle, and the bottle mouth has a smooth sealing performance.

4 Suitable for the production of high-grade and exquisite plastic hollow products, such as cosmetic bottles, baby bottles, space cups, light balls, etc.

The injection blowing process has several disadvantages compared to the extrusion process:

1 The process is complicated, and the mold processing is difficult and difficult to master.

2 There are many mold parts, long production and processing cycles and high cost.

3 Not suitable for multi-variety, small batch products.

Yangzhou Chengde (YC) is one of the best pipe manufacturers in the world, and the production diameter from 8" to 48" in OD and wall thickness from 9.53 mm up to 140mm. We can produce the A/SA53 steel pipes according to the ASME SA53 and ASTM A53 standards.

Yangzhou Chengde founded in 1988, always insist on innovating and creating excellence. At present, the total assets is 6 billion RMB, the number of staff is 3000 and cover an area of 2080 acres of the Chengde group. Chengde group is  the first echelon in national brand on seamless Steel Pipe and including 4 sections: Jiangsu Chengde incorporated company, Yangzhou Chengde Steel Pipe Co., ltd, Yangzhou Chengde Heavy Industry Co., ltd and Taizhou Chengde Steel Pipe Co., ltd.


Chengde have been working on the research.manufacture and sale of seamless pipe about 30 years, and the advantage of core competence is more prominent by integrate in technical.management and market with PCC.

1 The Piercing and rolling technology of Chengde possesses a number of patents in designing and manufacturing the equipment. The production is efficient and flexible, and the quality is stable.

2 The material grade is complete, and the size range is wide (three produce line can manufacture all non-standard sizes).  The Minimum Order Quantity (MOQ) as low as ONE piece, and the date of delivery is short with excellent cost performance.

3 The sales and service team is professional and localize.ASME SA53 Steel Pipe


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YANGZHOU CHENGDE STEEL PIPE CO.,LTD , https://www.chengdepipe.com