国产三级片在线观看,中文字幕免费高清电视剧,成人精品一区二区三区A片用毒蛇,特级西西人体WWWww

Kefengyuan Home > News > Industry news >

Products

Industry news

The inner ribbed pipe production line takes you to know the

Release time:2018-10-22 13:37

The inner ribbed pipe production line takes you to know the basic knowledge of the ribbed pipe.
Pipe material introduction
Inner rib reinforced polyethylene spiral corrugated pipe is the latest developed fully plastic inner rib reinforced wound pipe on the market. The pipe is made of high density polyethylene (HDPE), which has a large outer surface area, forming a pipe soil with compressive strength. The welding effect is good and the tensile strength of the reinforcement is enhanced. The inner rib structure is beneficial to improve the stability of the ring stiffness.
Pipe material characteristics
The pipe winding corrugated structure is reasonable, which is conducive to expanding the contact surface with the soil and the backfill soil filled in the pipe Valley and the pipeline itself bear the pressure of the surrounding soil together, so that the pipe soil acts together.
The vertical ribs in the middle of the pipe corrugation greatly improve the stability of the wave crest, which is good for compression resistance and impact resistance.
Then let's take a look at the appearance of the inner ribs.

內(nèi)肋管生產(chǎn)線

One, color
The color of pipes should be uniform.
Two. Appearance
1, no obvious bubbles, dents, impurities and irregular corrugation are allowed in the inner and outer walls of pipes. The ends of pipes should be straight and perpendicular to the axis. The inner rib should be tightly welded and the phenomenon of disengagement should not occur.
2, the pipe should be broken after cutting, no burrs.
Three, size and specification
1, inner diameter
The nominal size of pipe is nominal (DN/ID).
2, length
The effective length of pipe L is generally 6M and 9M. The other length is determined by the supplier and the buyer, and no negative deviation is allowed.
3. Size
The minimum average inner diameter, minimum wall thickness and minimum structural height of the pipe shall conform to the requirements of the table below. The average outer diameter of the pipe shall be determined by the manufacturer.
Qingdao Kefengyuan Plastic Machinery Co., Ltd. is located in the beautiful and rich coastal city called "Eastern Switzerland" - Qingdao, covering an area of 12,000 square meters, beautiful environment, superior geographical location, convenient transportation. Over the past ten years, the company has steadily strengthened its scientific and technological innovations, focusing on the management of foreign markets, is a high-tech enterprise involved in polymer materials, plastic machinery research and development, design and manufacture, production and operation and technical services as one.
The company relies on high-tech, rely on high-quality products, perfect service to create good economic and social benefits.
The company has developed more than 20 new products, such as environmentally friendly PP super-thick plate production line, PVC wood-plastic plate production line, PE large-caliber gas/water supply pipe production line, PE large-caliber hollow wall winding pipe production line, PP-R pipe unit, plastic buckle board unit, etc., which are well sold in China, and exported to Russia, Southeast Asia, Middle East, Africa and many other countries and countries. Area.

Tel

Top

日本人妻中文字幕爽爽爽干人妻 | 成人AV一区二区三区 | 国产欧美一区二区色老头 | 久久婷婷一区二区 | 亚洲高清国产传媒免费视频 | 91在线无码精品秘 传媒 | 能免费观看黄色视频的网站 | 国产成a人亚洲精品无码久久 | www.久久久久久久久 | 国产又粗又大又黄 | 巜少妇的滋味2做爰动漫 | 2023中文字幕一区二区三区 | 免费不卡可以看的av毛片网站 | 东北辽女好叫床脏对白 | 国产精品羞羞无码久久久 | 久久免费看少妇高潮片A黄 国产AV无码AV高清AV | 国产高清无码在线播放 | 无码精品人妻一区二区三 | 小12萝自慰喷白浆网站 | 国产人妻精品一区二区三水牛影视 | 黄视频在线观看官网 | 真实乱视频国产海角社区 | 四川BBB搡BBB搡多 | 91丨国产丨精品丨丝袜 | 免费看黃色AAAAAA 片 | 午夜成人理论片A片三区黑寡妇 | 91精品又粗又猛又爽 | 中文字幕第128页 | 国产乱码一区二区三区四区 | 国产一级二级在线观看 | 一级婬片A片AAAAA肉蒲团 | 欧美一区二区鲁丝袜片 | 无码一级久久久自慰毛片 | 潘金莲全黄—级A片性舒淇 亚洲午夜精品一区二区蜜桃 | 蜜桃aⅴ色欲A片无码精品接吻 | 欧洲美女淫妓A级高清视频播放 | 中国偷拍老肥熟露脸视频 | 国产又粗又猛又黄又爽无遮挡 | 麻豆亚洲AV永久无码精品久久1 | 91精品国产乱码久久久久久 | 国产精品探花熟女AV |