Rail travel has always been, and still is, my preferred way to travel. Exactly 30 years ago this week I arrived in China by train on a journey from Glasgow, Scotland to Hong Kong's Hung Hom Station. China was a country I knew little about apart from a few confused preconceptions. It would have been easy to fly to Hong Kong but to appreciate a country, or in this case two continents, overland travel encompasses the geography, of watching Europe slowly give way to Asia, of meeting people and observing how they also physically changed, and learning from people about their countries. That journey was also a life changer. If I had not taken the train, my China story would never have happened - 30 years later this country remains my adopted home! The experiences - incredible!穿心式千斤顶新闻热点话题宁国穿心式千斤顶今日要闻姜堰穿心式千斤顶新闻热点话题宁国预应力千斤顶新闻吧绥芬河穿心式千斤顶新闻热点话题宁国With prices of coal and metals rising, profits of listed companies in those sectors have also kept pace, giving an impetus to their share price rise.
预应力张拉千斤顶
预应力：为提高结构的承载能力预先张拉的力。
一、产品分类：
预应力千斤顶分为：前卡式千斤顶和穿心式千斤顶。
二、用途
广泛应用于公路桥梁、铁路桥梁、水电坝体、高层建筑等预应力施工工程。
三、特点
预应力前卡式千斤顶结构紧凑，张拉时工作平稳，油压高，张拉力大。
四、作用及配套使用
QYC270型千斤顶是一种预应力前卡式千斤顶，专用于张拉单根预应力钢绞线。（张拉一根钢绞线需要20吨的千斤顶）
预应力前卡式千斤顶需和电动高压油泵配合使用。锚具采用的是扁锚。
挤压机参数表：
工作对象 mm 钢绞线12.7-15.2
额定挤压力 kn 475
额定油压 mpa 50
挤压缸面积 mm2 9503.3
回程油压 mpa 《10
外形尺寸 mm 180*580
预应力电动高压油泵
一、用途
高压电动油泵是预应力液压设备的主要动力源，由泵体、控制阀、电动机、车体四大部分组成，专门于各种吨位的千斤顶、镦头器及挤压机等张拉机具配套使用。
二、参数
ZB2*2-50型电动油泵
额定压力：50mpa
电压：380V
电机：3KW
重量：120kg
外形尺寸“745*494*1025mm
三、整机标配
2块油表 2根油管（1根4米的出油管，1根4米的回油管）
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