Inspection and testing HP, WP Boiler Pipe

Our company specializes in exporting seamless steel tubes, alloy steel tubes, boiler tubes.When it comes to steel tube products, we will inevitably encounter some professional terms. The Hold point and Witness point are always found and indicated in the Inspection and Test Plan. They are the construction stages which may need supplementary inspection or verification. See how to use Hold Points and Witness points when inspections or verifications are required. What is it? There are two important inspection actions that must be carried out in respect of the Inspection and Test Plan, they are called Hold Points and Witness points. They are points in the construction stage where inspection or verification is required. Their purpose is to make sure specification requirements have complied accordingly and to proceed for the activities.Why would you want it? The definition of a Hold Point versus a Witness Point: A Hold Point is a mandatory verification point beyond which work cannot proceed without approval by the designated authority, typically the Engineer or Consultant or 3rd Party Inspector. Work cannot proceed until receipt of a Hold Point Release issued by the person(s) whom inspected the work. A Witness Point is an identified point in the process where the designated authority, typically the Engineer or Consultant or 3rd Party Inspector may review, witness, inspect method or process of work. The activities, however, may proceed. Our company has rich experience not only in products and exports, but also in details, such as  Boiler Pipes, Boiler pipes HP, Boiler pipes inspection, Boiler pipes RD, Boiler pipes RI, Boiler pipes SP, Boiler pipes testing, Boiler pipes WP, If you are interested in any of our merchandise or would like to discuss a custom order, remember to feel free to contact us. We're looking forward to forming successful business relationships with new clients around the world in the near future. Grade:

Seamless steel tubes for high / low and medium pressure boilers	10.20 etc.	GB3087	High qualuty carbon structural seamless ateel pipes for manufacturing of different kinds of low and medium pressure boilers.
	SA106B, SA106C	ASME SA106
	SA179/ SA192/ SA210A1, SA210C/ T11, T12, T22, T23, T91, T92	ASME SA179/192/210/213
	P11, P12, P22, P23, P36, P91, P92	ASME SA335
	ST35.8, ST45.8, 15Mo3, 13CrMo44, 10CrMo910	DIN17175
	P195GH, P235GH, P265GH, 16Mo3	EN10216-2
	20G, 20MnG, 25MnG, 15CrMoG, 12Cr1MoVG, 12Cr2MoG	GB5310

Note:Other Size Can Also Be Provided After Consuliting With Customers  

GB5310-2008 Chemical Component
no	grade	Chemical Component %																Mechanical Property
		C	Si	Mn	Cr	Mo	V	Ti	B	Ni	Alt	Cu	Nb	N	W	P	S	Tensile MPa	Yield MPa	Extend L/T	Impect (J) Vertical/ Horizontal	handness HB
1	20G	0.17- 0.23	0.17- 0.37	0.35- 0.65	≤ 0.25	≤ 0.15	≤ 0.08	—	—	≤ 0.25	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	410- 550	≥ 245	24/22%	40/27	—
2	20MnG	0.17- 0.23	0.17- 0.37	0.70- 1.00	≤ 0.25	≤ 0.15	≤ 0.08	—	—	≤ 0.25	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	415- 560	≥ 240	22/20%	40/27	—
3	25MnG	0.22- 0.27	0.17- 0.37	0.70- 1.00	≤ 0.25	≤ 0.15	≤ 0.08	—	—	≤ 0.25	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	485- 640	≥ 275	20/18%	40/27	—
4	15MoG	0.12- 0.20	0.17- 0.37	0.40- 0.80	≤ 0.30	0.25- 0.35	≤ 0.08	—	—	≤ 0.30	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	450- 600	≥ 270	22/20%	40/27	—
6	12CrMoG	0.08- 0.15	0.17- 0.37	0.40- 0.70	0.40- 0.70	0.40- 0.65	≤ 0.08	—	—	≤ 0.30	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	410- 560	≥ 205	21/19%	40/27	—
7	15CrMoG	0.12- 0.18	0.17- 0.37	0.40- 0.70	0.80- 1.10	0.40- 0.55	≤ 0.08	—	—	≤ 0.30	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	440- 640	≥ 295	21/19%	40/27	—
8	12Cr2MoG	0.08- 0.15	≤ 0.50	0.40- 0.60	2.00- 2.50	0.90- 1.13	≤ 0.08	—	—	≤ 0.30	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	450- 600	≥ 280	22/20%	40/27	—
9	12Cr1MoVG	0.08- 0.15	0.17- 0.37	0.40- 0.70	0.90- 1.20	0.25- 0.35	0.15- 0.30	—	—	≤ 0.30	—	≤ 0.20	—	—	—	≤ 0.025	≤ 0.015	470- 640	≥ 255	21/19%	40/27	—
10	12Cr2MoWVTiB	0.08- 0.15	0.45- 0.75	0.45- 0.65	1.60- 2.10	0.50- 0.65	0.28- 0.42	0.08- 0.18	0.002- 0.008	≤ 0.30	—	≤ 0.20	—	—	0.30- 0.55	≤ 0.025	≤ 0.015	540- 735	≥ 345	18/-%	40/-	—
11	10Cr9Mo1VNbN	0.08- 0.12	0.20- 0.50	0.30- 0.60	8.00- 9.50	0.85- 1.05	0.18- 0.25	≤ 0.01	—	≤ 0.40	≤ 0.020	≤ 0.20	0.06- 0.10	0.030- 0.070	—	≤ 0.020	≤ 0.010	≥ 585	≥ 415	20/16%	40/27	≤ 250
12	10Cr9MoW2VNbBN	0.07- 0.13	≤ 0.50	0.30- 0.60	8.50- 9.50	0.30- 0.60	0.15- 0.25	≤ 0.01	0.0010- 0.0060	≤ 0.40	≤ 0.020	≤ 0.20	0.40- 0.09	0.030- 0.070	1.50- 2.00	≤ 0.020	≤ 0.010	≥ 620	≥ 440	20/16%	40/27	≤ 250

note：Alt is holo-al content 2 grade 08Cr18Ni11NbFG of “FG” is mean fine grain,a. no special request, can not add other chemical compinent b.grade 20G of Alt ≤ 0.015%, no working request, but should be showing on MTC Standard: ASTM Standard2: ASTM A213-2001, ASTM A213M-2001, ASTM A335-2006, ASTM A672-2006, ASTM A789-2001, ASTM A789M-2001 Grade Group: A53-A369 Grade: A335 P1, A335 P11, A335 P12, A335 P5, A335 P9, A335 P91, A335 P92 Section Shape: Round Outer Diameter(Round): 6 - 914mm Place of Origin: Hengyang Valin Steel Tube Co.,Ltd Hubei Xinyegang Steel Co., Ltd Daye Special Steel Co., Ltd, Yangzhou Chengde Steel Pipe Co., Ltd. Baosteel Application: Boiler Pipe Thickness: 1 - 80mm Surface Treatment: Oil Certification: ISO CE IBR EN10204-2004 type3.2 BV/SGS/TUV inspection report Technique: Cold Drawn hot rolled/rolling Hot-expanded/expanding Alloy Or Not: Alloy Special Pipe: boiler tubes Product name: A335 P11 Alloy Steel Pipe for boiler A335 P12 Alloy Steel Pipe for boiler A335 P5 Alloy Steel Pipe for boiler A335 P9 Alloy Steel Pipe for boiler A335 P91 Alloy Steel Pipe for boiler A335 P92 Alloy Steel Pipe for boiler Keywords: A335 P11 Alloy Steel Pipe A335 P12 Alloy Steel Pipe A335 P5 Alloy Steel Pipe A335 P9 Alloy Steel Pipe A335 P91 Alloy Steel Pipe A335 P92 Alloy Steel Pipe Brand Name: SANON PIPE BAOSTEEL TPCO DAYE PIPES CHENGDE PIPE VALIN PIPE End protector: Plain Beveled Type: SMLS Length: 5-12m MTC: En10204.3.2B Heat treatment: Yes Secondary Or Not: new Non-secondary Supply Ability 2000 Tons Per Month A335 P11 alloy steel pipe 2000 Tons Per Month A335 P12 alloy steel pipe 2000 Tons Per Month A335 P5 alloy steel pipe 2000 Tons Per Month A335 P9 alloy steel pipe 2000 Tons Per Month A335 P91 alloy steel pipe 2000 Tons Per Month A335 P92 alloy steel pipe Packaging & Delivery Packaging Details A335 p22 Alloy Steel Pipe for boiler packaging:In bundles and in strong wooden box Port Shanghai Tianjin Lead Time 6-8 weeks Payment: LC TT D/P AS DISCUSSED QUALITY CONTROL 1~ Incoming Raw Material Inspection 2~ Raw Material Segregation to avoid steel grade mix-up 3~ Heating and Hammering End for Cold Drawing 4~ Cold Drawing and Cold Rolling, on line inspection 5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T 6~ Straightening-Cutting to specified length-Finished Measuring Inspection 7~Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc 8~ Packing and Stocking.