1. Nyocha ihe mejupụtara kemịkalụ: usoro nyocha kemịkalụ, usoro nyocha akụrụngwa (ngwa CS infrared, spectrometer na-agụ kpọmkwem, zcP, wdg). ① Infrared CS mita: Nyochaa ferroalloys, ígwè arụ ọrụ akụrụngwa, na C na S ọcha na ígwè. ② spectrometer ọgụgụ ozugbo: C, Si, Mn, P, S, Cr, Mo, Ni, Cn, A1, W, V, Ti, B, Nb, As, Sn, Sb, Pb, Bi n'ụdị n'ụba. ③N-0 mita: Nyocha ọdịnaya gas nke N na O.

2. Steel pipe geometric akụkụ na nlele anya:
① Nyocha mgbidi dị nchara ígwè: micrometer, ultrasonic ọkpụrụkpụ nlele, ọ dịghị ihe na-erughị isi 8 na nsọtụ abụọ ma dekọọ.
② Igwe anwụrụ ọkụ dị n'èzí na nyocha ovality: caliper, vernier caliper, mgbanaka mgbanaka, tụọ ebe kachasị na kacha nta.
③ Nyocha ogologo ọjà ígwè: ígwè teepu ihe, akwụkwọ ntuziaka na akpaka ogologo oge.
④ Nyocha curvature nchara nchara: Jiri onye na-achị achị, larịị (1m), nlele mmetụta, na waya dị mkpa iji tụọ curvature kwa mita na curvature nke ogologo niile.
⑤ Nyocha ígwè ọkpọkọ njedebe bevel angle na ọnụ ọnụ: square onye na-achị na clamping efere.

3. Nyocha elu igwe anwụrụ ọkụ: 100%
① Nyocha akwụkwọ ntuziaka: ọnọdụ ọkụ, ụkpụrụ, ahụmahụ, akara, ntụgharị ígwè ígwè.
② Nnyocha na-adịghị emebi emebi: a. Ultrasonic flaw detection UT: Ọ na-enwe mmetụta maka nrụrụ elu na n'ime ime nke ihe edo edo nke ihe dị iche iche. Ọkọlọtọ: GB/T 5777-1996. Ọkwa: ọkwa C5.
b. Nchọpụta ntụpọ Eddy ugbu a ET: (induction electromagnetic): na-enwekarị mmetụta maka ntụpọ nwere ụdị ntụpọ (oghere nwere oghere). Ọkọlọtọ: GB/T 7735-2004. Ọkwa: ọkwa B.
c. Ihe ndọta MT na nyocha ndọta ndọta: Nnyocha ndọta dabara adaba maka ịchọpụta n'elu na ntụpọ dị nso nke ihe ferromagnetic. Ọkọlọtọ: GB/T 12606-1999. Ọkwa: ọkwa C4
d. Nchọpụta ntụpọ eletrọnịkị ultrasonic: Ọ dịghị ihe jikọrọ ọnụ achọrọ, yana enwere ike itinye ya na ọnọdụ okpomọkụ dị elu, ngwa ngwa dị elu, nchara nchara siri ike ịchọpụta ntụpọ elu.
e. Nnwale penetrant: fluorescence, agba agba, ịchọpụta ntụpọ elu nke ọkpọkọ ígwè.

4. Nleba anya njikwa ọrụ igwe: ① Nnwale ule: tụọ nrụgide na nrụrụ, ma chọpụta ike (YS, TS) na ntinye aka plasticity (A, Z) nke ihe. Ihe nlere ogologo na ntụgharị, akụkụ ọkpọkọ, ụdị arc na okirikiri (￠10, ￠12.5). Obere dayameta mkpa mgbidi ígwè anwụrụ, nnukwu dayameta oké mgbidi ígwè anwụrụ, ofu nlele ogologo. Rịba ama: Mgbatị nke ihe nlere anya mgbe mgbawa gbajiri agbaji metụtara nha ụdị GB/T 1760.
②Nnwale mmetụta: CVN, ụdị C-notched, ụdị V, ọrụ J uru J/cm2. Standard sample 10 × 10 × 55 (mm) Na-abụghị ọkọlọtọ sample 5 × 10 × 55 (mm)
③Nnwale siri ike: Brinell hardness HB, Rockwell hardness HRC, Vickers hardness HV, wdg.
④ Nnwale hydraulic: nrụgide ule, oge nkwụsi ike, p = 2Sδ / D

5. Steel pipe usoro arụmọrụ nyocha usoro:
① Nnwale na-enwu enwu: ihe nlere anya okirikiri C (S/D>0.15) H= (1+2)S/(∝+S/D)
L = 40 ~ 100mm ọnụọgụ ngbanwe kwa nkeji ogologo = 0.07 ~ 0.08
② Nnwale mgbanaka mgbanaka: L = 15mm, enweghị mgbape, ọ tozuru oke
③ Nlebawanye na curling ule: taper etiti etiti bụ 30°, 40°, 60°
④-ehulata ule: nwere ike dochie ule flattening (maka nnukwu dayameta ọkpọkọ)

6. Metallurgical analysis nke ígwè ọkpọkọ:
① Nyocha ike dị elu (nyocha microscopic): ihe ndị na-abụghị ọla 100x GB / T 10561 nha ọka: ọkwa ọkwa, ọdịiche ọkwa. Nhazi: M, B, S, T, P, F, AS. Decarburization oyi akwa: n'ime na n'èzí. Usoro A: Klas A - sulfide, Klas B - oxide, Klas C - silicate, D - spherical oxidation, Class DS.
②Nnwale mmụba dị ala (nyocha macroscopic): anya gba ọtọ, iko na-ebuli elu 10x ma ọ bụ obere. a. Usoro ule etching acid. b. Sulfur ebipụta usoro nnyocha (tube oghere nnyocha, na-egosi ala-cultured owuwu na ntụpọ, dị ka looseness, segregation, subcutaneous egosipụta, akpụkpọ folds, ọcha tụrụ, inclusions, wdg c. Ụlọ elu ekara hairline nnyocha usoro: nnyocha nke ọnụ ọgụgụ nke ntutu isi. ntutu isi, Ogologo, na nkesa.