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{"title":"ASTM B622 C22 Seamless Nickel Alloy Steel Tube, For Marine Environments","imgUrl":"https:\/\/img.chinax.com\/nimg\/65\/e7\/c26a3cd30fe2c8e0c432eaca6065-200x200-1\/astm_b622_c22_seamless_nickel_alloy_steel_tube_2c_for_marine_environments.jpg","attrs":{"Brand Name":"YUHONG","Model Number":"ASTM B622 C22","Certification":"ISO 9001\/TUV\/PED","Place of Origin":"China"}}
{"title":"Astm A179 \/ Asme Sa179 U\u2011bend Tube For Shell And Tube Heat Exchanger And U Tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/84\/48\/ac39354c5a851b88c2585060f3f7-200x200-1\/astm_a179_2f_asme_sa179_u_e2_80_91bend_tube_for_shell_and_tube_heat_exchanger_and_u_tube_bundle.jpg","attrs":{"Payment Terms":"T\/T,L\/C","Model Number":"ASTM A179\/ASME SA179","Material":"ASME SA179\/ASTM A179","Price":"Negotiable"}}
{"title":"ASTM A789 S32750 Super Duplex Seamless Tube - High-Strength Heat Exchanger","imgUrl":"https:\/\/img.chinax.com\/nimg\/7f\/46\/c84d65ac24582f9ec1e2c4fa3fc2-200x200-1\/astm_a789_s32750_super_duplex_seamless_tube_high_strength_heat_exchanger_tubing_for_severe_corrosive_service.jpg","attrs":{"Model Number":"HEAT EXCHANGER TUBE","Certification":"ASME, ABS, DNV-GL , BV, LR , KR, CCS, PED, TUV, ISO9001, AD2000","Minimum Order Quantity":"500KGS","Delivery Time":"Depends on order quantity"}}
{"title":"ASME SA179 Carbon Steel U Bend Tube for Shell and Tube Heat Exchanger U Tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/8f\/071fe85340f198e4d3c37e0a30e8-200x200-1\/asme_sa179_carbon_steel_u_bend_tube_for_shell_and_tube_heat_exchanger_u_tube_bundle.jpg","attrs":{"Minimum Order Quantity":"500KGS","Material":"Low-Carbon Steel","Supply Ability":"1000 tons \/ month","Testing":"Hydrostatic \/ ET \/ UT as Required"}}
ASME SB163 UNS N04400 (Monel 400) U-Bend Seamless Tube for Heat Exchanger Service
Industry Background & Manufacturing Capability
Yuhong Group Co., Ltd. specializes in the supply of heat exchanger components, pressure vessels, and air-cooled equipment for the global energy and process industries. With over 35 years of experience in nickel alloy tubular products, we maintain full compliance with ASME Boiler and Pressure Vessel Code Section II specifications.
Chemical Composition (ASME SB163 Table 1 Requirements)
Element
Composition Limit (Weight %)
Nickel (Ni)
63.0 min
Copper (Cu)
28.0 - 34.0
Iron (Fe)
2.5 max
Manganese (Mn)
2.0 max
Carbon (C)
0.30 max
Silicon (Si)
0.50 max
Sulfur (S)
0.024 max
Source: ASME SB163, Table 1 - Chemical Requirements for UNS N04400
Mechanical Properties & Condition Options
ASME SB163 permits UNS N04400 tubing in either annealed or stress-relieved condition per Table 2 of the specification. For U-bend configurations, the base tube is typically supplied in the annealed condition prior to bending to ensure formability, followed by stress relief as required.
Condition
Tensile Strength min. (ksi / MPa)
Yield Strength 0.2% Offset min. (ksi / MPa)
Elongation in 2 in. or 50 mm min. (%)
Rockwell Hardness (Annealed Ends)
Annealed
70 (483)
28 (193)
35
--
Stress-Relieved
85 (586)
55 (379)
15
B75 max
Source: ASME SB163, Table 3 - Mechanical Properties of Tubes
Manufacturing Requirements & Mandatory Testing
Per ASME SB163 Section 6, each tube must undergo either hydrostatic testing or nondestructive electric testing at the manufacturer's option unless otherwise specified in the purchase order. The specification covers outside diameters up to 3 in. (76.2 mm) with minimum wall thicknesses up to 0.148 in. (3.76 mm) and average wall thicknesses up to 0.165 in. (4.19 mm).
Mandatory Lot Testing per ASME SB163 Sections 9-10:
Test Type
Sampling Requirement
Specification Reference
Chemical Analysis
One test per heat
Section 10.1
Tension Test
One test per lot
Section 10.2
Flare Test
1% of tubes per lot (min. one tube)
Section 10.5
Hydrostatic or NDT
Each tube
Section 6.5
Grain Size (where applicable)
One test per lot
Section 10.4
For U-bend tubes, the supplementary requirements of ASME SB163 (Section S1) apply:
Wall thickness at bend apex shall not be less than: TF = T(2R) / (2R + D), where T = minimum permissible wall prior to bending, R = centerline bend radius, D = nominal OD
Leg length tolerance: plus ⅛ in. for lengths up to 20 ft, increasing to plus ⅜ in. for lengths over 60 ft
Squareness of ends: 0.010 in. max for OD up to ⅝ in.; 0.016 in. max for larger diameters
Supporting Fabrication Capabilities & Material Grades
Beyond the tube itself, Yuhong supplies complementary heat exchanger components manufactured to matching material grades:
Component
Typical Material
Relevant Standard
Tubesheets
UNS N04400 / UNS N08825
ASME SB127 / SB162
Baffles
UNS N04400 / Carbon Steel
ASME SB127
Channel Heads
UNS N04400 / Clad Materials
ASME Section VIII Div.1
Tube-to-Tubesheet Welding
ERNiCu-7 Filler
ASME Section IX
Full traceability is maintained from raw material mill certificates through final inspection, with EN 10204 Type 3.1 or 3.2 certification available upon request.
Application Environments
UNS N04400 U-bend tubes are specified in heat transfer equipment where the combination of seawater corrosion resistance, high strength, and fabricability is required:
Shell-and-tube heat exchangers - marine cooling water service, chemical plant reboilers
Condensers - power generation and desalination plants with seawater or brackish cooling media
Chemical processing - equipment handling hydrofluoric acid, sulfuric acid, and alkaline solutions
Marine engineering - offshore platforms, shipboard heat exchangers, and ballast water systems
Frequently Asked Questions
Q: What is the difference between ASME SB163 and ASTM B163 for UNS N04400 tubes?
ASME SB163 is the Section II designation adopted for ASME Boiler and Pressure Vessel Code applications; ASTM B163 is the corresponding standard under ASTM jurisdiction. The technical requirements are identical.
Q: What is the maximum outside diameter covered by ASME SB163?
The specification covers tubes 3 in. (76.2 mm) and under in outside diameter.
Q: Is hydrostatic testing required after U-bending?
When specified by the purchaser, hydrostatic testing shall be performed after bending with a minimum holding time of 5 seconds at pressure.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1990
Total Annual:
50M-75M
Employee Number:
50~850
Ecer Certification：
Verified Supplier
Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
Jinjiang Factory:
Main Products: ...
Yuhong Holding Group equipments production base at Jiangsu Jiangyin City, Jinjiang City and Yancheng City. Total production area around 184000 square meters, main products : Heat Exchanger, Condenser, Pressure Vessel , Fired Heater, Economizer, Columns, Reactor.
Jinjiang Factory:
Main Products: ...
