超碰一区二区三区|免费无码婬AAAA片在线鸿画|亚洲精品自慰专区|国产最新精品调教视频|国产精品玖玖五区|亚洲无码第12页|97视频久久九九九亚洲视频|曰曰碰天天澡曰曰超碰天天|欧美精品在线网址|成人在线手机免费

Qingzhou Dahan Heavy Industry Co.,Ltd.
Call me!
Tel:0086 18353659311
Email: Alice@qzdhzg.com
Qingzhou Dahan Heavy Industry Co.,Ltd.
Manager:Alice
Mobile: 0086 18353659311
Skype: Alice Chen
WeChat: 1091767485
WhatsApp: 008618353659311
Tel: +86 0536 8800950
Fax: +86 0536 8800950
Website: www.bodatu.cn
Address: The North Of Yiwangfu North Road, Economic Development Zone,Qingzhou ,Shandong ,China
Home>>news

Requirements for raw material selection of cement pipe making machine


Cement pipe machine named incredible is construction machinery specializing in the production of cement pipe, cement pipe plays an important role in urban construction, because cement pipe machine has become a construction machinery and equipment is an important class of devices.
The cement pipe making machine has the characteristics of good stability, convenient operation and high yield. It is the best equipment for the production of cement pipe. To produce the highest quality of cement pipe, in addition to the technical design of the cement pipe making machine is required, the production of raw material selection also has a clear requirement.
Cement pipe machine production cement pipe is mainly used as raw materials of cement, sand and stone, mainly has the following requirements:
1 cement
Should be chosen as the Portland cement 425 label. Because of the hanging roller tube using dry hard concrete, water cement ratio is relatively small, the drying shrinkage of cement volume change small, with the unilateral cement dosage is not high, so generally do not appear shrinkage cracks, due to the initial setting time of the cement is relatively short, high early strength, for stable density of concrete to prevent collapse of wall and improve the steam curing is good.
2.
Generally used in the sand, concrete and easy good, good impermeability, and concrete strength low, pipe is easy to collapse; coarse sand, concrete and easy bad, good impermeability, and the mixed high strength, pipe is not easy to collapse and sand ratio of choice is also very important, high sand ratio, concrete and easy to good, good formability, good impermeability, of concrete in the tube is easy to collapse; low sand ratio, concrete and easy to poor, forming poor, poor impermeability, concrete pipe is not easy to collapse.
3 Stone
Small caliber suspension and tube with gravel or crushed gravel, to reduce the friction resistance of the stone surface, easy compaction of concrete, large caliber suspension and tube should be the machine broken stone, the stone surface roughness easily are embedded and fixed the, to alleviate the collapse of concrete possible.
page up:Steam curing process of cement pipenext:Method for effectively improving the efficiency of cement pipe making mechanism
product centers
Contact us
manager:Alice 0086 18353659311
Address:North End Of Yiwangfu North Rd., Economic Development Zone, Qingzhou, Shandong, China (Mainland).
Website:www.bodatu.cn

Follow sweep the DAHAN Heavy Industries official website For more details, please have a call.
Copyright ? 2005-2015 青州大漢重工有限公司All Rights Reserved  技術支持:山東中迅.濰坊百度