2011NB/T 47016-2011 Mechanical property tests of product welded test coupons for pressure equipments
2000JB/T 4744-2000 Mechanical property tests of product welded test coupons for steel pressure vessels
JB/T 4744-2000 Mechanical property tests of product welded test coupons for steel pressure vessels was changed to NB/T 47016-2011 Mechanical property tests of product welded test coupons for pressure equipments.