<xmp id="j892s">
<xmp id="j892s"><ins id="j892s"></ins>
<form id="j892s"><form id="j892s"></form></form>
<button id="j892s"></button>
<form id="j892s"><button id="j892s"></button></form>
<xmp id="j892s"><xmp id="j892s">
<xmp id="j892s"><form id="j892s"><form id="j892s"><button id="j892s"></button></form></form>
<ins id="j892s"><form id="j892s"></form></ins>
<xmp id="j892s">
<button id="j892s"><form id="j892s"><xmp id="j892s">
<form id="j892s"></form>
<xmp id="j892s"><form id="j892s"><form id="j892s"></form></form><xmp id="j892s">
<xmp id="j892s"><form id="j892s"></form>
<form id="j892s"><button id="j892s"></button></form><form id="j892s"><form id="j892s"><ins id="j892s"></ins></form></form>
<button id="j892s"><ins id="j892s"><xmp id="j892s"><xmp id="j892s"><form id="j892s"></form><form id="j892s"><form id="j892s"></form></form><form id="j892s"></form><xmp id="j892s"><form id="j892s"></form>
<form id="j892s"></form>
<form id="j892s"><button id="j892s"></button></form>
<form id="j892s"><form id="j892s"></form></form><xmp id="j892s"><form id="j892s"></form>
<form id="j892s"><button id="j892s"></button></form>
<xmp id="j892s"><form id="j892s"><form id="j892s"></form></form>
<xmp id="j892s"><form id="j892s"></form>
<xmp id="j892s">
<xmp id="j892s"><form id="j892s"></form>
<xmp id="j892s"><form id="j892s"></form>
<xmp id="j892s"><form id="j892s"></form><xmp id="j892s"><form id="j892s"></form>
【新品研發】陜鋼集團630MPa級高強抗震鋼筋再添新成員
 【2020-06-27】
6月26日,由陜鋼創新研究院聯合陜鋼集團漢鋼公司研發的630MPa級φ25㎜的高強抗震鋼筋迎來了首次試軋,并一舉獲得成功。這是既φ22mm該級別螺紋鋼成功研發后的又一個新規格,標志著高強抗震鋼筋的品規在不斷完善,在新品研發方面不論市場怎么不變化,速度不減,力度不變。φ25㎜規格與φ22m...
欧美日韩中文字幕激情,永久免费AV无语国产电影,欧美成人不卡高清免费,97人妻碰碰碰无码视频