4140 Q345D 50Mn Industrial Forged Flanges Large Scale 9000MM Diameter
4140 Q345D 50Mn Industrial Forged Flanges Large Scale 9000MM Diameter
Products:
Large scale industrial flange,pressure vessel flange,engineering flange,construction material flange,petroleum pipe line flange,flange pipe fitting,valve flange,water pump flange,reducer flange,fasten flange.
Products reference:
| Material | Q345D,50Mn,4140,18CrNiMo7-6,304L |
| Max dia | 9000MM |
| Application |
Various large scale industrial equipment parts |
| Melting process | EF+LF+VD |
| Production process |
Forging+heat treatment+rough machining+QT |
| Forging ratio |
≥5 |
|
Applicable |
ASTM,ASME,DIN,JIS,ISO,BS,API,EN ,DIN |
|
Executive standard |
JB/GB/EN/DIN/JIS/ASME/ASTM/ISO |
|
Certification authority |
ISO,BV,SGS, IST, UL,CTI |
|
Delivery term |
Rough machining(N+T);finish machining(Q+T) |
|
Test equipment |
Spectrograph,UT device ,tensile and compact test machine,metalloscope,outside micrometer,bore dial indicator,hardness test machine |
| Service |
Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
Custom properties:
|
Material elements |
C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
| 4140 | 0.38-0.43 | 0.15-0.35 | 0.60-0.90 | ≤0.035 | ≤0.040 | 0.80-1.10 | -- | 0.15-0.25 | - |
| Q345D | 0.13-0.20 | 0.17-0.37 | 1.20-1.60 | ≤0.030 | ≤0.030 | ≤0.30 | ≤0.30 | -- | |
| 18CrNiMo7-6 | 0.15-0.21 | 0.17-0.35 | 0.50-0.90 | ≤0.025 | ≤0.025 | 1.50-1.80 | 1.40-1.70 | 0.25-0.35 | |
| 50Mn | 0.48-0.56 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | 0.25 | 0.30 | -- | 0.48-0.56 |
| 304L | 0.030 | 1.00 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | - |
|
Mechanical property |
Dia.(mm) |
TS/Rm(Mpa) |
YS/Rp0.2(Mpa) |
EL/A5(%) |
RA/Z(%) |
Type Of notch |
Impact energy |
HBW |
| 4140 | Ø10 | 740~1000 | 450~850 | ≥12 | ≥25 | V | ≥40 | ≤250HBS |
| Q345D | Ø10 | 470-630 | ≥345 | ≥21 | -- | V | -20℃≥27 | ＝＝ |
| 18CrNiMo7-6 | Ø15 | ≥980 | ≥785 | ≥9 | ≥40 | V | ≥47 | ≤269HBS |
| 50Mn | Ø25 | ≥645 | ≥390 | ≥13 | ≥40 | V | ≥31 | ≤255HBS |
| 304L | Ø15 | ≥520 | ≥205 | ≥40 | -- | ≤187HBS |
Process procedure:
Forging process flow quality control: Raw material steel ingot into warehouse(test the chemical content) → Cutting→ Heating(Furnace temperture test) → Heat treatment after forging(Furnace temperture test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal diamention, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment
Commerce clause:
| Max weight | 30T |
| MOQ | 1PC |
| Delivery time | 15-50Days |
| Package | Plywood case,wooden pallet,steel frame |
| Delivery term | FOB;CIF;CFR；DDU； |
| Payment term | T/T,LC |
| Type of shipping |
By ocean,air |
Advantage
- High-precision dimensional tolerance;
- Excellent mechanical properties;
- Produce different dimension based on customer’s requirements;
- Advanced manufacture equipments and inspection devices;
- Excellent technical personality;
- Control the production procedure strictly;
- Pay attention on the package protection;
- Quality full service.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.