久久久免费精品视频,一区二区三区爽爽爽,日韩又大又粗又黄,美女小穴妖精视频鸡插入

Products
Spare parts

The sapphire plunger rod is made of artificial corundum single crystal, utilizing its advantages of wear resistance, corrosion resistance, thermal stability, and chemical stability. According to customer requirements, various materials of plunger rods can be provided, such as alumina ceramic, zirconia ceramic materials, and plunger rod components with stainless steel sheaths can also be provided to meet customer needs. Mainly used in high-performance liquid chromatography pumps, medical analysis pumps, petroleum pumps, and various high and low pressure pumps.

Size range

Gemstone round rod

project

Diameter D

Length H

Parameter indicators

Size range

φ0.40~40.00

1.00~200.00

The surface roughness is Rz0.1, the diameter tolerance is 0.005mm, and the roundness is 0.001~0.0025mm.

Extreme deviation

0.004~0.05

0.03~0.25

Metal components

Exterior structure

Customer customization

Customer customization

Each product undergoes pull-out force testing, and the concentricity meets the standard requirements.

Material selection

Hard and brittle materials such as sapphire, ruby, alumina ceramics, zirconia ceramics, etc. can be selected according to needs.

Product consultation hotline:19924616008
欧美国产曰本在线| 又黄又粗又爽又长欧美在线视频观看 | 91视频在线成人国产| 色射亚洲综合| 机械厂一区二区三区乱码午夜| 黄片插入大全视频| 欧美整片日韩偷拍| 日韩欧美一区激情| 美女被爆操麻豆| 快色一区二区| 五月丁香日人妻视频出租屋 | 亚洲 欧美p| 中文字幕最新| 日韩成人视频在线视频一本在线| porn在线乱| 欧美一区二区三区蜜桃| 日日射夜夜操| 欧美3D黄色国产| 好吊日视频免费在线观看| 经典三级久久久久久久| 亚洲五月激情婷婷| 夫妻伦理午夜福利| 91欧美精品成人综合在线 | 国产在线看欧美xx| 精品愉拍| 无码精品人妻一区二区中文| 日本三级片一二区| 国产清纯| porn 超碰 91| 性插视频女| 97免费视频在线第一页| 久久婷婷精品视频观看| 国产Av婬乱麻豆| 日本一区二区三区91视频| 欧美 亚洲 夜夜| 欧美久久久视频综合| 欧美日韩精品人妻少妇一区二区三 | 国产欧美日韩多了| 免费国产一级片內射日本欧州| 一起c在线| 国产精品秘 入口尤物|