Alloy Steel Tube and Pipe Welding Flanges

- Oct 12, 2019-


Product Description

 

MaterialCarbon steel, Stainless steel, Alloy steel, Aluminum, etc.

SpecificationOEM, according to customers' drawings

Main Equipment2500T/1600T/1000T/630T/400T drop forging equipment, grinding pressure equipment, hydraulic forging press, CNC-machines, machine-center

Heat TreatmentNormalized, Quench Temper Annealing Q+T

ProcessOpen die forging (free drop forging or hot forging)-normalizing & tempering proof machining-quenching & tempering-finish machining

CertificationISO9001;ISO14001; OHSMS18000; API Q1 etc.

Quality AssuranceCrack testing, chemical analysis, mechanical testing and metallography, etc.

Test equipmentOptical spectrum analyzer, CMM, hardness test equipment, tensile test machine

QC1) Technicians self-check in production

2) Engineer spot check in production

3) QC inspects after mass production finished

4) International sales who were trained the technical know-how spot check before shipping.

Max Capabilities of Forgings:

welded neck flange

Manufacturing Process

flange inspection-1

 Main Equipments as following:

Forging Equipments4500t &1600t Hydraulic forging equipments; 50t&15t Manipulators; 2t&1t&450kg air hammer; 5t electro hydraulic hammer etc.

Heat treatment Equipmentsφ2*12m pit furnace; φ8*3*3m table resistor furnace; 1.5*0.8*1.5m box resistor furnace; 8*3*3m gas furnace; 6*3*2m gas furnace; 7.5*4*2.5 gas furnace;16*2.5*2.5 gas furnace etc.

Machining EquipmentsTotal 40sets; including φ2*12m heavy sleeper; φ5m vertical lathe; floor type boring and milling machine; CNC miller ;φ1.6*16m heavy sleeper; single-arm planer; boring and milling machine etc.

Quality Test EquipmentsImpact testming machine;universal testing machine; spectrometer; impact machine; cryonstat; hardness tester ; projector; metallographic microscope ,king hardness tester etc.


Forging & Heat Treatment & Machining Equipments

Flange-Inspection


Quality Control


1.During the smelting process, strict control is required both for the prescribed elements( 21 CrMo10), and for some harmful elements and gas, like P, S , Sn, As, Sb, Bi, and H, O, N.

2.To guarantee that the pipe moulds have reached our flaw detection standards, and that the forged blanks own refined grains, we have employed strict  forging technique upon the ductile iron pipe moulds.

3. After roughing process (drilling inner holes), a quenching and tempering treatment is given by vertical pit furnace upon the pipe moulds for further refined grains and higher comprehensive mechanical propertied.

4. CNC equipment is adopted for finishing for high processing precision.

5.All of the propertied of our pipe moulds are superior than the GB/T 25715 centrifugal ductile iron pipe mould standards.