Kuv tsis paub yog tias koj tau hnov ​​​​​​txog "Cambrian Era Explosion". Xyoo no, txhua yam kev lag luam hauv Suav teb tau rov zoo thiab loj hlob sai zoo li "Cambrian Era". Xyoo no, Tuam Tshoj GDP tau loj hlob sai, kev lag luam ncig tebchaws tau lees paub, thiab tus naj npawb ntawm cov neeg tau nce mus txog qib siab tshaj plaws xyoo no. Ntawm qib siab tshaj plaws, ntawm qhov kev rov zoo no, peb npaj txhij los hloov kho rau kev hloov pauv ntawm kev ua lag luam txhua lub sijhawm, muab rau cov neeg siv khoom nrog peb cov txiaj ntsig thiab kev sib koom ua ke, thiab pab cov neeg siv khoom muab tus nqi zoo dua. Thov nco ntsoov tias peb yog tus neeg muag khoom thiab tus tub luam yeeb nkab seamless. , peb txaus siab muaj kev koom tes ntxiv nrog koj.

Thov cia kuv qhia peb lub tuam txhab thiab cov khoom tseem ceeb:

sanonpipe yog ib lub tuam txhab xa khoom yeeb nkab hlau tsis muaj seamless hauv Suav teb. Nws feem ntau tsim cov yeeb nkab hlau tsis muaj seamless rau cov boilers, cov yeeb nkab hlau tsis muaj seamless rau cov chiv thiab cov tshuaj, cov yeeb nkab roj, cov yeeb nkab hlau tsis muaj seamless rau cov tshuab, thiab cov yeeb nkab hlau tsis muaj seamless rau cov qauv. Cov qauv tseem ceeb thiab cov ntaub ntawv yog:

ASTM A335 P91, Alloy Steel Seamless, Tuab Phab Ntsa Seamless,15crmog Alloy Steel Yeeb Nkab, Gb3087, sa106, thiab lwm yam. Koj tuaj yeem mus saib nplooj ntawv tseem ceeb ntawm peb lub vev xaib kom pom cov khoom koj tau yuav.