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{"title":"Duplex Steel Pipes , Super Duplex Pipes, A789, A790 , A928 S31803(2205) S32750","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/c6\/64\/6b128cc50c8e244b69695b7e081a-200x200-1\/duplex_steel_pipes_2c_super_duplex_pipes_2c_a789_2c_a790_2c_a928_s31803_282205_29_s32750_282507_29_s32760.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
{"title":"ASTM A790 S32750 Super Duplex Steel Seamless Pipe Water Treatment Equipment","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/4c\/20\/abd14e3e23feec7ec6c3993e7f39-200x200-1\/astm_a790_s32750_super_duplex_steel_seamless_pipe_water_treatment_equipment.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"500kgs"}}
{"title":"ASTM A790 UNS S32750\uff082507, 1.4410 ), Super Duplex Stainless Steel Pipes, PREN>40","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/c9\/50\/d0a97184ab9bb4e0d66261e9eaf0-200x200-1\/astm_a790_uns_s32750_ef_bc_882507_2c_1_4410_29_2c_super_duplex_stainless_steel_pipes_2c_pren_3e40.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, BL, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015","Minimum Order Quantity":"100KGS"}}
{"title":"Duplex Stainless Steel Pipe ,SA789, SA790, SA928,DIN17456\/17458,EN10216-5 UNS","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/ae\/20\/ba7e287d9b6c22b2cd6917c54c93-200x200-1\/duplex_stainless_steel_pipe_2csa789_2c_sa790_2c_sa928_2cdin17456_2f17458_2cen10216_5_uns_s31803_2cs32205_2cs32101_2cs32304_2cs3275.jpg","attrs":{"Place of Origin":"China,USA, Korea, UE","Brand Name":"YUHONG SPECIAL STEEL","Certification":"ABS, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
254SMO PREMIUM ALLOY SEAMLESS PIPE A312 UNS S31254 DUPLEX STEEL
Overview
254SMo stainless steel has excellent acid, alkali, seawater, and chloride corrosion resistance, especially in high chloride and acidic environments. Its corrosion resistance is even more outstanding.
High strength and toughness: Due to its high molybdenum, nitrogen, chromium, and low-carbon chemical composition, 254SMo stainless steel has good resistance to stress corrosion cracking, durability, and toughness, and can also work at high temperatures and pressures.
Good wear resistance and corrosion cracking resistance: Due to its special chemical composition, 254SMo stainless steel has good wear resistance and corrosion cracking resistance, and can maintain high performance in harsh working environments.
Large size seamless steel pipe: Compared with other steels, 254SMo stainless steel has certain processing properties, can produce large size seamless steel pipes, and has excellent spanwise welding performance.
254 SMO Properties:
Excellent resistance to pitting and crevice corrosion, PRE = ≥42.5%
High resistance to general corrosion
High resistance to stress corrosion cracking
Higher strength than conventional austenitic stainless steels
Good weldability
Heat Treatment
The tubes are delivered in heat treated condition. If additional heat treatment is needed due to further processing the following is recommended.Solution annealing 1150–1200°C (2100–2190°F), quenching in water. Thin-walled tubes min. 1130°C (2060°F), quenching in air/water.
254SMO Equivalent Grades
STANDARD
UNS
WERKSTOFF NR.
AFNOR
SIS
EN
254SMO
S31254
1.4547
Z1 CNDU 20.18.06Az
2378
X1CrNiMoCuN20-18-7
254SMO Mechanical Properties
Wall thickness
Proof strength
Tensile strength
Elong.
Hardness
mm
Rp0.2a)
Rp1.0a)
Rm
Ab)
A2"
HRB
MPa
MPa
MPa
%
%
<5
≥310
≥340
675-850
≥35
≥35
≤96
>5
≥310
≥340
655-850
≥35
≥35
≤96
254SMO Chemical composition
C
Si
Mn
P
S
Cr
Ni
Mo
N
Cu
≤0.020
≤0.80
≤1.00
≤0.030
≤0.010
20
18
6.1
0.20
0.7
254 SMO Applications:
Ocean: Marine structures in the marine environment, desalination, aquaculture, seawater heat exchange
Environmental protection fields: flue gas desulfurization devices for thermal power generation, wastewater treatment
Energy fields: atomic power generation, comprehensive utilization of coal, ocean tide power generation, etc.
Petrochemical industry: oil refining, chemical equipment and other food industries: salt making, soy sauce brewing, etc.
High concentration chloride ion environment: papermaking industry, various bleaching devices
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
