... in producing stainless steel pipes, the main material: 304,304 L, 301,321, AF316L, 2520 and so on. The company specializes ... in producing stainless steel pipes, the main material: 304,304 L, 301,321, AF316L, 2520 and so on. Product specification is ... φ133*4-6φ14*1.5-2φ40*2-3φ159*4-6φ16*2-3φ42*3-4φ168*6 ...