江苏少妇性BBB搡BBB爽爽爽,韩日产理伦片在线观看,99人妻碰碰碰久久久久禁片,色婷婷香蕉在线一区二区

Casting coupling

The production process of parts is long and the process is complex, especially the hardness of ratchet tooth surface is hrc54-62, the depth of effective hardening layer is more than 3.6mm, the surface roughness is Ra0.8, the concentricity of inner hole and outer circle is 0.01mm, and the precision is high.

axle sleeve

The products are processed by welding after circle, which requires high welding requirements. All ut flaw detection is required after welding, and the welding seam is grade 2. The roughness should be less than 0.8 and the precision should be less than 0.05mm

Bearing pedestal

Long intermediate sleeve

Thread wheel

Untitled 3

American weldment 1

Coupling 2

Coupling

Online Message

If you need, please leave your contact information and we will contact you within 24 hours

Contact Us

E-mail:changzhouqingfeng@qfykjx.com

Address:No. 68, Diligent Road, Xuejia Town Industrial Park, Xinbei District, Changzhou City, Jiangsu Province

Phone:0519-85286225

Copyright ? 2025  Changzhou Qingfeng Yikang Machinery Co., Ltd.   All Rights Reserved

ICP:蘇ICP備15040667號-1

特级艺体西西444WWw | 国产一级婬乱片A片AAA图片 | 狂野欧美性猛交BBBB | 羞羞视频在线观看免费视频 | 欧美人妻黑人无码国产 | 麻豆AV在线免费观看 | 真实国产乱子伦精品一区二区 | 囯产精品久久久久久久久久久婷婷 | 色欲午夜性一二三区熟女 | 无码A片试看120秒 | 国产日韩中文字幕 | 免费试看一级毛片 | 成人一区二区在线视频播放免费 | 亚洲一级av无码毛片www | 凹凸人人妻人人做人人玩 | 国产剧情亚洲无码视频 | 国产女性无套 免费网站 | 人妻丰满熟妇AV无码久久 | 18禁黄色免费网站 | 久热高清在线视频 | 亚洲成人无码视频 | 性夜黄A片爽免费网站 | 女AVwww无套白浆流出 | www黄色视频在线观看 | 国产av成人精品www | 中文字字幕在线中文乱码修改方法 | 久久久久无码精品国产sm果冻 | 安徽BBBBB视频BBB | 国产乱码精品一区二区三 | www,国人在线人妻偷拍 | 操美女自慰潮喷久久久 | 美女一级片免费看 | 九九水密桃亚洲AV无码精 | 成人午夜电影在线观看 | 欧美又大又色又爽BBBBB片 | 亚洲无码高清视频在线观看 | 少妇又滑又紧又嫩的刺激频道 | 喷水白丝蜜臀av久久av | 国内精品国产成人国产三级 | 国产伦子伦视频免费播放 | 国产一级婬乱片A片AAA图片 |